The following hotfix is available for Appian 18.2.

Hotfix Package T

This is a cumulative hotfix package that includes Hotfix Packages A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, and S as well as new hotfixes in a single download and a set of instructions. This package is required for any Appian 18.2 installations not currently on Hotfix Package T. After installing, you will be running on Appian 18.2 Hotfix Package T.

See the Installation section at the bottom of this page for instructions on how to install this hotfix package.

18.2 Hotfix Package T

Release Date: 13 December 2019

Resolved Issues

  • Security Updates - Medium

  • AN-145504 - Critical
    For security reasons, the Query DB Node smart service has been updated. Customers running the LOAD DATA INFILE command against a MySQL instance (only applicable to Configured Data Sources; not applicable to the Appian Cloud database) from a Query DB Node in a Process Model must set the custom property as a comma-separated list of file paths to whitelist the required directories. If the property is not set, any Process Model using this command will pause by exception at runtime. This command is generally used to periodically load data from files into the database, and so we expect that most customers will not have to take the required action described here.

Release Date: 22 November 2019 (Released as Hotfix Package S)

Resolved Issues

  • Security Updates - Critical

  • AN-141281 - High
    Fixed an issue where orphan process variables could exist and impact system performance.

  • AN-139947 - Medium
    System memory use for Appian Cloud sites has been reduced.

Release Date: 29 October 2019 (Released as Hotfix Package R)


  • Add product metrics for matching URLs in integrations

Resolved Issues

  • Security Updates - Critical

  • AN-142283 - Medium
    Fixed an issue that caused some record links to break on import if the record type was deleted and then re-imported.

  • AN-142517 - Low
    Scheduled backups for on-premise customers taken with the backup script now include Kafka logs and Zookeeper data

  • AN-141300 - Low
    HTML entered in a post, message, or comment is now rendered as text in Appian emails.

Release Date: 30 September 2019 (Released as Hotfix Package Q)

Resolved Issues

  • Security Updates - High

Release Date: 4 September 2019 (Released as Hotfix Package P)

Resolved Issues

  • Security Updates - Critical

  • AN-139079 - High
    An issue that could prevent zookeeper from restarting cleanly in on-premises installations has been resolved.

  • AN-70284 - Medium
    Fixes a variety of internationalization issues with date and time formatting. For the Arabic [ar] locale, hours and seconds are now internationalized correctly, as well as the timezone. For the Arabic [ar], Chinese (Simplified) [zh_CN], Chinese (Traditional) [zh_HK], Japanese [ja], and Swedish [sv] locales, AM and PM will also be properly internationalized.

  • AN-129916 - Medium
    A error in Kafka that could prevent startup has been corrected.

  • AN-137595 - Medium
    Fixed an indexing error that could occur with updates to the analytics engine

  • AN-138292 - Medium
    When running as a Windows service, the service manager process is now more tightly linked to the Windows service, preventing cases where one would be running without the other.

  • AN-136623 Low
    Fixed an issue where duplicate entries were being logged for some exec errors

  • AN-137640 - Low
    Added a new audit log, removed_processes.csv, to track events where a process is deleted or archived off of the system

  • AN-138674 - Low
    Search server startup now waits for 30 seconds before timing out. Enhanced messaging has been added for the waiting period.

Release Date: 26 July 2019 (Released as Hotfix Package O)

Resolved Issues

  • Security Updates - Medium

  • AN-113345 - Medium
    Drilling from a process report to individual processes now works correctly.

  • AN-135140 - Medium
    Fixes domain name mismatch on certificate from cloud sites

  • AN-135990 - Medium
    The "version" Process Model property now returns the correct result in Process Reports when the process has undergone In-Flight Modification (IFM).

  • AN-136861 - Medium
    Side-By-Side Layout item lists no longer cause an error with null or empty string values.

  • AN-129208 - Low
    The start process smart service no longer logs excessive error messages if the user who starts the process does not have permission to see that process.

  • AN-134946 - Low
    Binding an Appian Engine to a port already in use now logs a detailed error message and returns error code 100.

  • AN-137338 - Low
    A rare race condition that could cause an engine to hang in a "stopping" state when stopping the engines immediately after starting them has been prevented.

Release Date: 25 June 2019 (Released as Hotfix Package N)

Resolved Issues

  • Security Updates - Medium
  • AN-135342 - Critical
    The Export Data Store Entity to Excel and the Export Data Store Entity to CSV smart services (and their related functions) now export data without having duplicated rows. This issue only occurred when no 'Selection' or 'Aggregation' parameters were set on these smart services.
  • AN-132064 - High
    Resolved a browser-specific issue with Google Chrome 78+ that caused developers to be falsely alerted about concurrent editing of an object.
  • AN-134661 - High
    Fixes an issue where some caches were not properly removing entries periodically.
  • AN-134686 - High
    An issue that prevented some Data Stores from appearing in the Create Constants dialog has been resolved.
  • AN-131227 - Medium
    Appian's shutdown process is now more resilient to services stopping out of order
  • AN-131472 - Medium
    Appian's topology configurations are now more flexible
  • AN-133038, AN-75970 - Low
    The "version" Process Model property now returns the correct result in Process Reports and sorts along with the other data when sorting by a different column.

Release Date: 28 May 2019 (Released as Hotfix Package M)

Resolved Issues

  • Security Updates - High
  • AN-132129 - Medium
    Migration has been introduced to unlock the datatypes that are incorrectly locked. This will prevent errors on CDT import and updates.
  • AN-132813 - Medium
    The system is now more resilient against cascading degradations caused by thread exhaustion when the connection between the application server and business datasource is unavailable.
  • AN-131812 - Medium
    The performance of task reports has been improved.
  • AN-127646 - Low
    Incremental update errors no longer log the entire content of the update message to the analytics logs. Previously, repeated incremental update errors could rapidly increase the amount of disk space used by these logs.

Release Date: 19 April 2019 (Released as Hotfix Package L)

Resolved Issues

  • Security Updates - Low
  • AN-131275 - High
    Fix wrong types for OpenAPI Integration headers and query parameters as well as wrong types for OpenAPI Connected System basic authentication.
  • AN-129865 - Medium
    This migration fixes any existing occurrence of older versions of data type not being correctly associated with the newer versions. This will prevent errors on import and CDT updates.
  • AN-131163 - Medium
    Fixed an issue related to older versions of data types not being correctly associated with the newer versions. This will prevent errors on import and CDT updates.
  • AN-129632 - Medium
    Fixed an issue that prevented the application server from shutting down.
  • AN-129355 - Medium
    The News feed now loads correctly when attached document thumbnails can't be displayed.
  • AN-129323 - Medium
    A rollback in the process execution engines that could result from saving a process variable of type Date and Time no longer occurs.
  • AN-127971 - Medium
    Arabic task titles now display correctly in emails.
  • AN-130704 - Low
    Amazon Machine Learning connected system now indicates that new Amazon customers cannot create AmazonML models.
  • AN-130316 - Low
    Engine leadership election upon site startup is now more stable.
  • AN-129466 - Low
    When importing a change that adds indirect members to a parent group, those indirect members will now have the correct permissions inherited from the parent.
  • AN-110140 - Low
    Cleanup script now successfully executes on the nodes that do not run Search Server

Release Date: 22 March 2019 (Released as Hotfix Package K)

Resolved Issues

  • Security Updates - High

  • AN-123111 - Medium
    Fixed an issue with performance when designing interfaces; the change will especially improve navigation to/from the Performance View and general performance of large interfaces.

  • AN-125925 - Medium
    The service manager will now terminate with a descriptive error message if it is unable to allocate a thread rather than run in a potentially unstable state.

  • AN-126449 - Medium
    The Kafka component of the service manager has been updated to prevent crashes on Windows due to file contention during deletion operations.

  • AN-127095 - Low
    Fixed an issue where recent changes to an interface of a component plugin are not reflected at runtime.

  • AN-128331 - Low
    Fixed an issue that inflated the Application Server session count for Appian Cloud sites.

Release Date: 27 February 2019 (released as Hotfix Package J)


  • Added a new data metrics log rules.csv to track information about each individual content engine object: constants, decisions, expression rules, interfaces, query rules, rule folders, and integrations.

  • The new Slow Plug-in Functions log helps identify plug-in functions that either take a long time to evaluate or return a large result, which may cause system-wide performance issues. See the Logging page for more information on what is included in the log.

  • The Memory Circuit Breaker now automatically detects when an expression is using too much memory and stops the evaluation before it can cause site-wide performance problems. See the Memory Circuit Breaker page for more information on how to diagnose memory issues and design memory-efficient expressions.

Resolved Issues

  • Security Updates - Medium

  • AN-124329 - High
    Entity-backed records now correctly handle primary keys of type text that contain pound (#) symbols.

  • AN-126208 - High
    Fixed an issue where group-assigned task forms containing dynamic links did not display correctly in preview mode.

  • AN-77353 - Medium
    Tasks can no longer be submitted via submit link in preview mode prior to acceptance.

  • AN-118197 - Medium
    The performance of saving very large interfaces and decisions has been improved.

  • AN-122026 - Medium
    When running in the high availability configuration, the service manager is now more resilient to temporary network failures as well as failures on startup and shutdown.

  • AN-122269 - Medium
    Should a primary engine fail to successfully checkpoint when shutting down the service manager, the engine will now remain running to allow for subsequent attempts to checkpoint. Should checkpointing continue to fail with no obvious cause, such as lack of disk space, please contact Appian Support.

  • AN-125975 - Medium
    Messages are now properly logged to the Design Error log (design_errors.csv). In rare circumstances, some messages would fail to be written to the log prior to this fix.

  • AN-121597 - Low
    The system now better protects against the inadvertent deletion of system objects.

  • AN-123038 - Low
    Activity in the interface designer is now logged in the Interface Performance logs as "interface designer" instead of "internal."

  • AN-124416 - Low
    Resolved an issue that caused exceptions to be printed in application server logs.

  • AN-124693 - Low
    The Design Errors log now contains the process instance ID for errors encountered in task forms.

  • AN-126576 - Low
    Fixed an issue that prevented JMS from automatically reconnecting on JBoss.

  • AN-123928 - Low
    Reduces the logging level from ERROR to INFO when there is a problem writing to the Interface Performance logs.

Release Date: 18 January 2019 (released as Hotfix Package I)


  • The new Plug-in Functions Running During High Memory log helps identify the root cause of heap spikes by listing all plug-ins that are evaluating when application server memory reaches a high level. See the Logging page for more information on what is included in the log.
  • The Design Errors log now contains an evaluation ID (which is also displayed in the error message) and UUID of the object that encountered the error. Additionally, errors on record views now log the record instance ID and the record view URL stub.

Resolved Issues

  • AN-121976 - High
    Customers will no longer see the “Invalid Type” error when a package containing the referenced data type is inspected while processes are running.

  • AN-122213 - High
    Fixed an issue that prevented autofill of forms in Google Chrome.

  • AN-122742 - High
    Parsing very large expressions now uses significantly less memory.

  • AN-122923 - Medium
    Memory usage has been reduced for large interfaces as well as expressions using the reduce() function.

  • AN-120664 - Low
    Fixed an issue that prevented chart reference line labels from displaying.

  • AN-122572 - Low
    User filters and search boxes in Appian Designer no longer cause an error when a space character is entered.

  • AN-122660 - Low
    Resolved an issue that caused exceptions to be printed in application server logs on startup.

  • AN-122863 - Low
    Selecting a date in the Created To filter while viewing the Versions dialog for a process model no longer causes an error dialog.

  • AN-123568 - Low
    Reports are now logged correctly in the Interface Performance logs when accessed using a!reportLink().

Release Date: 21 December 2018 (released as Hotfix Package H)

Resolved Issues

  • Security Updates - Medium

  • AN-120819 - Critical
    Fixes an issue where, in rare circumstances, Appian data store entries intended to be transient could accumulate indefinitely, using more and more disk space.

  • AN-117598 - Medium
    Fixed an issue where values were cleared unexpectedly from the change password page.

  • AN-118230 - Medium
    During a failover event, the service manager now coordinates the failover to the new primary engine more quickly and accurately.

  • AN-119335 - Medium
    Appian will now perform TLS hostname verification when acting as a JMS client. JMS broker servers must have valid certificates when connecting over TLS.

  • AN-119769 - Medium
    When using the Arabic locale and entering integers in Western numerals, separators are now interpreted correctly and a validation is shown when entering a decimal value.

  • AN-120688 - Medium
    The sub_process_ids() function no longer returns an empty value. This restores behavior to that of version 18.1 and earlier.

  • AN-120897 - Medium
    Importing a child group no longer results in an insufficient permissions error when the designer is inheriting Administrator permissions to the child from the parent group.

  • AN-119899 - Low
    Improved performance of the global objects view.

  • AN-119671 - Low
    Start form evaluations are now correctly captured in the SAIL details and summary logs

  • AN-121069 - Low
    The number of data server transactions replayed from Kafka logs on startup is no longer restricted.

  • AN-121808 - Low
    The public API setTaskDisplayName now updates the task display name in all locations, including the Tasks tab in Tempo.

Release Date: 30 November 2018 (released as Hotfix Package G)

Resolved Issues

  • Security Updates - High
  • AN-116859 - Critical
    Fixed an issue that prevented sites from being deleted properly after the "Show Tempo Link" configuration had been changed.
  • AN-117530 - High
    An opportunity for transaction replay error in the process engines has been removed.
  • AN-117844 - High
    The upgrade to MySQL driver version 5.1.47 has been reverted. The customers will no longer see the “illegal mix of collations” error from MySQL using JDBC driver version 5.1.47 when the character encoding is specified as UTF-8 and the default collation is used by MySQL.
  • AN-117898 - High
    The reliability of the Kafka sub-component of the Service Manager has been improved under failover conditions.
  • AN-118255 - High
    Completing a related action after navigating to the record from a record tag no longer throws an error.
  • AN-109001 - Medium
    Fixed an issue that prevented users in Sites from correctly navigating back to the original form after submitting a start process link if the user had interacted with a web content field.
  • AN-110671 - Medium
    Incremental updates from the process execution engines to the process analytics engines are now more resistant to certain types of data corruption.
  • AN-112928 - Medium
    Data type information has been correctly migrated to prevent the possibility of temporary unavailability and incorrect behavior due to the addition of execution engines.
  • AN-113269 - Medium
    Loading interfaces containing start process links when in stateless mode no longer results in an error.
  • AN-115460 - Medium
    Fixed an issue that prevented site pages from being deleted properly.
  • AN-115971 - Medium
    The performance of the Content engine has been improved for users who are members or administrators of thousands of groups.
  • AN-117178 - Medium
    Export Record to Excel now works fine when used in combination with the a!isNativePhone() and the a!isNativeTablet() functions.
  • AN-117733 - Medium
    After completing a start process link that was launched from another form in a site page, the page now properly refreshes.
  • AN-118796 - Medium
    After skipping the password expiration warning, users are not correctly directed to their start page.
  • AN-114186 - Low
    In the Missing Precedents dialog, links to the folders and groups that reference a missing object will now open a new tab and load the corresponding folder or group.
  • AN-115044 - Low
    An issue that prevented some Data Stores from appearing in the list of an application's objects has been resolved.
  • AN-115154 - Low
    Fixed an issue where expression search results incorrectly displayed older versions of an evolved system rule, even though the latest version of the rule was referenced across all the objects in the application.
  • AN-115209 - Low
    A situation where an execution engine would not promote itself to PRIMARY status after recovering from rare error conditions has been resolved. This error did not affect high-availability sites.
  • AN-115391 - Low
    The process analytics engines will be automatically rebuilt from the data in the execution engines when this hotfix is applied.
  • AN-115555 - Low
    Record lists with the export to excel button enabled no longer evaluate user filter and default filter expressions multiple times when loading the list.
  • AN-117145 - Low
    A spurious error message written to the service_manager.log file during startup has been removed.
  • AN-117424 - Low
    Fixed an issue where process reports, when returned from an expression search, incorrectly displayed older versions of an evolved system rule, even though the latest version of the rule was referenced by the process report.
  • AN-117965 - Low
    The columns in the sail_summary and sail_details logs that count the number of stateless and stateful evaluations now show the correct values.
  • AN-118416 - Low
    Fixes an issue where loading or interacting with a record view did not always get recorded in the Interface Performance Details log (sail_details.csv).
  • AN-119505 - Low
    Starting data server in a clean state now wipes version history data making startup process more robust.

Release Date: 4 October 2018 (released as Hotfix Package F)

Resolved Issues

  • Security Updates - Critical

  • AN-115299 - High
    Fixed a bug in IE11 where designers couldn't create Integrations from the Call Integration node in the Process Modeler due to an unpopulated Integration Type dropdown.

  • AN-111914 - Medium
    When viewing the contents of a process model folder within an application, process models that are in the folder but are not in the application will display a tooltip on mouseover, indicating they are not in the application.

  • AN-113114 - Medium
    Nested start process links launched from related action forms correctly return to the previous screen after submission

  • AN-114819 - Medium
    Fixed an issue that prevented the group function from recognizing known Group properties.

  • AN-110631 - Low
    Startup of the process execution engines while resetting process analytics engines is now more reliable on sites using the high availability configuration. Prior to this fix, process execution engines may get "stuck" in a starting state and the message remaining ids to propagate: null would be logged. The workaround for this issue was to restart the process execution engines that were referenced in these log messages.

  • AN-111734 - Low
    System Administrators who are not also in the Designer role no longer see an error when accessing the Administration Console.

  • AN-112959 - Low
    Reduces the amount of data logged in some scenarios in order to use less disk space.

  • AN-114579 - Low
    A new public API getObjectsBytype replaces a previous API of the same name, which is now deprecated. The previous method required passing a private class as an argument (com.appiancorp.ix.Type); the new method uses classes available in the Public API .

Release Date: 28 September 2018 (released as Hotfix Package E)


  • A proper error message is now logged when the service manager fails to start due to invalid configurations.

  • Improved performance of the global objects view by not loading objects in this view unless a search is performed or/and a filter is applied.

Resolved Issues

  • Security Updates - Critical

  • AN-114812 - High
    Fixed an issue which prevented inputs in the Call Integration smart service from appearing after migrating from 17.4 to 18.2+

  • AN-96390 - Medium
    When running the service manager stop script, Zookeeper and Kafka can now be stopped independently of the engines by specifying them in the new -s or --services parameter.

  • AN-108503 - Medium
    The service managers now shuts down more reliably when an transaction error occurs after the stop script has been executed.

  • AN-110970 - Medium
    Card layouts configured with links now execute links correctly when the card contains an image or billboard.

  • AN-112967 - Medium
    Process analytics reports for users who are members of a large number of groups (> 5,000) now execute faster.

  • AN-113188 - Medium
    File upload components in grids now display maximum file size validations.

  • AN-113321 - Medium
    Process reports that filter on a list of process ids no longer result in an error if one of those process ids is invalid.

  • AN-113933 - Medium
    Tempo users who launch a start process link from a record list now return to the record list after completing all chained forms in that process.

  • AN-114074,AN-114857 - Medium
    Environments with a very large number of groups now use less memory.

  • AN-114770 - Medium
    Site logos now render correctly when defined by expression.

  • AN-112734 - Low
    A small memory optimization has been implemented in the way the data types are stored and retrieved.

Release Date: 31 August 2018 (Released as Hotfix Package D)


  • Performance View has been enhanced to display metrics for save configuration of components, and to only recalculate metrics or reset to the top level of the expression when necessary

Resolved Issues

  • Security Updates - High.

  • AN-109613 - High
    Fixed an issue where some local variables were reusing values of local variables defined in different parts of an object.

  • AN-109954 - High
    Large number of emails in the notifications email engine will no longer cause the engine to lock up when it tries to send them.

  • AN-110178 - High
    Errors during the engine migration process now halt engine startup.

  • AN-110717 - High
    The Appian data source is now compatible with Microsoft SQL Server Driver version 6.4. Prior to this fix, errors could occur with migration of tables in the Appian data source during upgrade when using Microsoft JDBC Driver 6.4 for SQL Server.

  • AN-111208 - High
    For security reasons, the web content component has been updated. The new version prohibits the source parameter from pointing to an Appian Web API or servlet plugin.

  • AN-111731 - High
    Data type information is now correctly propagated to the newly added process execution engines. This fix prevents the possibility of temporary unavailability and incorrect behavior after adding additional execution engines.

  • AN-112823 - High
    Fixed a backwards compatibility issue with the Call Web Service node. Once again, the desired connection port is being specified by the host header.

  • AN-113146 - High
    Process events, like messages, on execution engines above execution15 no longer result in hanging processes under high load.

  • AN-107505 - Medium
    A form of data corruption that could occur after a rollback in an execution engine has been prevented

  • AN-107654 - Medium
    The process execution kdbs will no longer start if the kdb file for one shard (i.e execution00) is placed in the folder for a different shard (i.e. execution01). This helps prevent certain kinds of data corruption that could after manual errors copying kdb files.

  • AN-108903 - Medium
    Latest MS SQL Driver (6.2.4) is now applied to all cloud sites. A property has also been enabled that will allow customers to switch to the older driver via a support ticket.

  • AN-110127 - Medium
    The Export Data Store Entity to Excel smart service now applies the process initiator's timezone to the exported time and datetime fields.

  • AN-110249 - Medium
    Expired documents are now visible in the correct folder views and designers will see a graceful message advising them to contact their system administrator if they attempt to view an expired document.

  • AN-110387 - Medium
    The mechanism for replicating data between the execution and analytics engines has been made more robust to errors.

  • AN-111283 - Medium
    Fixed an issue where the date filters were being evaluated in the GMT timezone inspite of the user timezone not being GMT.

  • AN-111405 - Medium
    Groups Membership Rules now recognize conditions with the same name but different casings to be unique.

  • AN-111994 - Medium
    Groups no longer fail to import due to missing member groups

  • AN-112007 - Medium
    Email address validation for users now accepts all top level domains registered as of March 2018.

  • AN-112133 - Medium
    Fixed an issue that prevented the runtime execution of integrations with custom error messages that referenced rule inputs

  • AN-112988 - Medium
    The loading bar now renders correctly when chaining through forms launched via a start process link.

  • AN-79496 - Low
    Fixed an issue where the text() function was incorrectly rounding certain numbers.

  • AN-82187 - Low
    The log file engine_disk_usage.csv now correctly reports the "Partition Space Available" column as being the total size of the disk partition, not the amount of unused space remaining on the partition. This updates behavior to be consistent with 16.3 and earlier.

  • AN-110132 - Low
    Updated OpenAPI Connected Systems so that Integrations from them only generate required headers and parameters, as was initially intended.

  • AN-110276 - Low
    The service manager and services now shut down more reliably when running the stop script.

  • AN-110952 - Low
    Fixed an issue when the Database Administrators group is deleted and reimported, the Cloud Database menu option to navigate to phpMyAdmin in Tempo would not show up.

Release Date: 30 July 2018 (Released as Hotfix Package C)


  • Email polling now supports TLS 1.1 and 1.2. The End of Life date for TLS 1.0 has passed.

Resolved Issues

  • AN-109722 - Critical
    Process execution engine migration will now complete successfully for customers affected by the previously hotfixed issue AN-107056.

  • AN-110674 - High
    Data migration routines in the process execution engines now run completely when upgrading from a version prior to 18.2. Prior to this fix, the migration step would complete successfully during upgrade, but one migration routine could be skipped, potentially causing transaction replay failures on subsequent restarts of the execution engines.

  • AN-64000 - Medium
    Fixes an issue where in some rare circumstances, older versions of rules were used when evaluating expressions.

  • AN-66584 - Medium
    The process model timezone is defaulted to the primary timezone both when created from application designer and from the process modeler.

  • AN-104252 - Medium
    The performance of pickers has been improved. Pickers now send substantially fewer requests to the server while the user is typing.

  • AN-105751 - Medium
    System emails about new tasks and alerts now show the task display name in the correct locale.

  • AN-109657 - Medium
    Updated component delete behavior in the Live View so that a Columns Layout is automatically deleted when its last Column Layout is removed and no other contents are present.

  • AN-109913 - Medium
    The service manager can now be restarted successfully if it is stopped or dies without first checkpointing after running the script.

  • AN-110068 - Medium
    OpenAPI/Swagger definitions uploaded as part of OpenAPI Connected Systems now parse correctly on Appian installations on Windows.

Release Date: 20 July 2018 (Released as Hotfix Package B)


  • On-premise customers can now run a single script which outputs all the information needed to generate licenses to run Appian, irrespective of whether the customer has the correct license already installed.

  • Improved performance of the object search picker on /design.

  • Metrics log files in logs/service-manager/metrics that are older than thirty days are now removed on startup of the service manager.

Resolved Issues

  • AN-109875 - Critical
    A problem that could lead to deleted processes not getting removed from the process analytics engines has been resolved.

  • AN-108952 - Critical
    Fixed an issue with integrations referencing fn!urlwithparameters() in the URL field which prevented integrations from loading.

  • AN-110091 - High
    The record type's default filter will no longer be removed after updating and saving other aspects of the record type.

  • AN-108069 - High
    Fixed a performance issue caused by saving a rule or interface that references many other rules.

  • AN-108740 - High
    Fixed an issue that prevented a reassigned task from being available to the assignee pool

  • AN-109566/AN-110021 - High
    Fixed an issue where some local variables were reusing values of local variables defined in different record configurations, such as related actions and views.

  • AN-109942 - Medium
    Fixed an issue that prevented mailto links from functioning inside cards and grids.

  • AN-108431 - Medium
    It is now always possible to drop components above or below an empty Columns Layout.

  • AN-108862 - Medium
    The last attribute of a group type can now be successfully removed from the group type's properties.

  • AN-108910 - Medium
    Fixed an issue that prevented designers from uploading documents when the admin console file extension blocking feature was turned on.

  • AN-106291 - Low
    Record list headers and values now respect the alignment provided by designers.

  • AN-108562 - Low
    Links in cards and billboards now update their display color based on background color.

Release Date: 2 July 2018 (Released as Hotfix Package A)


  • The Expressions Trace log, expressions_trace.csv, has been updated to include an additional column that displays the name of the rule that called the function, rule, or smart service.

  • The Expressions Trace log, expressions_trace.csv, has been updated to include an additional column that displays the evaluation time of the individual function or rule excluding the evaluation time of its parameters.

  • Application server start up time has been reduced. System objects that are not changed will no longer be loaded during application server start up.

Resolved Issues

  • AN-105386 - High
    Knowledge Centers and document folders within the deprecated Personal and Teams Community now display in Appian Designer, although creating or moving content to be inside this hierarchy is disabled (the exception is that content can still be created or moved into My Private Knowledge Center). All Knowledge Centers can now be moved to be a top-level object; moving the Knowledge Centers in the Personal and Teams Community hierarchy to another Community or the top level will allow content to be added to them.

  • AN-105401 - High
    A rare race condition that could cause deadlocks with the application server connecting to the Appian Engines has been resolved.

  • AN-106516 - High
    Re-archiving a process (after previously archiving and then unarchiving it) will no longer result in an engine rollback.

  • AN-106606 - High
    In high-availability configurations, when a replica engine falls more that 3000 transactions behind the corresponding primary engine, the replica will restart from the latest checkpointed engine data file on the next checkpoint event. This can significantly reduce the time to recovery for sites with high transaction throughput should a failover event occur.

  • AN-106898 - High
    In high-availability configurations, replica engines will no longer fall behind the corresponding primary engine in high-load situations.

  • AN-107056, AN-107053 - High
    Data corruption that could have resulted in incorrect process models starting has been corrected. This corruption could have only occurred after a rollback in an execution engine.

  • AN-107454 - High
    Executing a contextual related action no longer evaluates the body of the related actions tab.

  • AN-107455 - High
    Related action context is no longer evaluated on every UI interaction.

  • AN-108872 - High
    Upgrading from 18.1 Hotfix D to 18.2 no longer results an an error when starting the Appian engines.

  • AN-106100 - Medium
    Background processing in the process execution engines has been made more efficient, resulting in lower CPU load.

  • AN-106235 - Medium
    Rows with null identifiers can now be correctly selected in editable grids where selection occurs via row highlighting.

  • AN-106415 - Medium
    Added date and time filters to the minute and hour aggregations on the historical view of the Rule Performance page, in order to increase usability of navigating to specific rules across a long spanning paging grid.

  • AN-106468 - Medium
    We eliminated a rare condition where normally unselectable components in the Interface Designer could erroneously appear selectable.

  • AN-106662 - Medium
    Dropdown choices can now be scrolled into view when the window is short.

  • AN-106668 - Medium
    While viewing the contents of a parent group in Appian Designer, selecting a child group from the contents grid and removing its parent will no longer throw an error when that action causes loss of permission to the child group.

  • AN-107475, AN-108000 - Medium
    The currently selected tab in a Site now visually indicates keyboard focus.

  • AN-107891 - Medium
    A Quick App record, with a required field allowing multiple selections from a list, no longer hides previously used selections for that field and does not error on record deletion.

  • AN-108515 - Medium
    The use of the 'Load Resource Bundle' plugin inside a record list no longer triggers an error when exporting the record list.

  • AN-105621 - Low
    Fixed an issue where the historical view of the Rule Performance page would return a paging grid error when navigating between rules having more than and less than 25 data points.

  • AN-107124 - Low
    Override the charset of your integration request body. By default, Appian appends charset=UTF-8 to the Content-Type that the designer selects from the dropdown. With this hotfix, designers who want to override the charset can simply add a row to the HTTP header grid with the key "Content-Type" to override the Content-Type from the dropdown – default charset and all.

  • AN-107664 - Low
    The configure script now backs up the conf/ directory.

  • AN-107866 - Low
    The configure script can now run without a connection to the internet. This restores behavior to be the same as in versions 18.1 and prior.

  • AN-108173 - Low
    When designing interfaces, the delete behavior in the Live View has been updated so that the Columns Layout is preserved even when the last Column Layout is removed.


Perform the following steps to apply the hotfix:

  1. Stop Appian. See Starting and Stopping Appian for detailed instructions:
    1. Shut down the application server.
    2. Shut down the search server.
    3. Shut down the data server.
    4. Shutdown all Appian Engines, ensuring that the engines are checkpointed upon shutdown.
  2. Back up your existing Appian instance. See Backing Up Your Existing Appian Instance for instructions.
  3. Unzip the contents of the archive into your <APPIAN_HOME> directory.
  4. Run the deleteFiles script (deleteFiles.bat on Windows, on Linux) that is now located in your <APPIAN_HOME> directory.
  5. Unzip the contents of the archive that is now located your <APPIAN_HOME> directory.
  6. If you maintain customized or overridden Spring Security .xml files, merge them with the associated base files in the /deployment/web.war/WEB-INF/conf/security/ directory.
  7. Delete the deleteFiles script and
  8. If you are using a Web server, copy the content of <APPIAN_HOME>/ear/suite.ear/web.war to the folder where the Web server is getting the static resources. See Copy Static Resources to the Web Server for more information.
  9. Clear the application server cache
    • If you are running JBoss, delete the folder <JBOSS_HOME>/standalone/tmp/work/jboss.web/default-host/suite (including all subfolders) to clear the application server's JSP cache
    • If you are running WebLogic, delete the <WEBLOGIC_HOME>/<project_name>/domains/<domain_name>/config/deployments/<suite.ear> and ` //domains//servers/AdminServer/tmp/_WL_user/` directories to clear the cache when re-deploying the application.
  10. If you are using WebLogic:
    • Delete the existing suite.ear from WebLogic.
    • Deploy the Appian EAR.
      • From the WebLogic Administration Console, on the Deployments screen, click Install.
      • Select suite.ear (<APPIAN_HOME>/ear/suite.ear) and click Next.
      • Select Install this deployment as an application and click Next.
      • On the next screen, click Finish.
  11. Run the reset analytics script.
  12. Start Appian:
    1. Start the Appian Engines.
    2. Start the data server.
    3. Start the search server.
    4. Start the application server.

To determine if Appian 18.2 Hotfix Package T is deployed, open the file located in <APPIAN_HOME>/conf/. The contents of this file should match the following code sample:

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