The following hotfix is available for Appian 19.1.

Hotfix Package E

This is a cumulative hotfix package that includes Hotfix Packages A, B, C, and D as well as new hotfixes in a single download and a set of instructions. This package is required for any Appian 19.1 installations not currently on Hotfix Package E. After installing, you will be running on Appian 19.1 Hotfix Package E.

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

19.1 Hotfix Package E

Release Date: 26 July 2019


  • AN-52550
    Usernames may now contain apostrophes.

Resolved Issues

  • Security Updates - High

  • AN-136428, AN-136466, AN-136570 - High
    The Hotfix resolves a vulnerability related to Google Service Account integrations with Appian. It is recommended that users of Google Service Account integrations reset their passwords in connection with the installation of this Hotfix.

  • AN-137627 - High
    Query database smart service now tolerates MySQL client-side prepared statements and does not fail.

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

  • 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-136782 - Medium
    MySQL prepared statements are now correctly closed. Query Database Smart Service will no longer fail because of application reaching the max_prepared_stmt_count value for prepared statements.

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

  • AN-137015 - Medium
    A new Appian installation now correctly starts with MySQL 8.0.16 configured as a primary data source. Customers will no longer see the data truncation error.

  • AN-137414 - Medium
    The optimization to enable faster querying of deeply nested CDTs with one-to-many relationships has been turned on by default for on-premise customers.

  • 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-135661 - Low
    The Mean Individual Time value in the appian_functions_details.csv and expressions_details.csv logs is now calculated correctly. Prior to this fix, the value could be greater than the Mean Total Time value.

  • AN-136209 - Low
    Zookeeper connectivity issues during startup no longer prevent a clean shutdown of the Appian engines.

  • AN-136685 - Low
    Fixed an issue that caused extraneous logging in customer logs

  • AN-137010 - Low
    An artificial memory cap for the search server has been removed.

  • 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 Package D)

Resolved Issues

  • Security Updates - Medium
  • AN-134504 - Critical
    Clear the Appian WSDL cache and retry the request if an error occurs
  • 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-134686 - High
    An issue that prevented some Data Stores from appearing in the Create Constants dialog has been resolved.
  • AN-135134 - High
    Fixes content length too long when sending over multipart form data in an integration
  • AN-131383 - Medium
    Fixed an issue related to user navigation after submitting a form on an Action site page.
  • AN-131428 - Medium
    Exporting a record list to Excel will now work when the record type's sort is defined using a!sortInfo() but the ascending parameter is not defined.
  • AN-1132239 - Medium
    Loading interfaces containing start process links when the SAIL cache is full no longer results in an error.
  • AN-134022 - Medium
    Appian now recovers correctly after receiving certain types of error responses from an RDBMS. Previously an application server restart was required to recover.
  • AN-134652 - Medium
    Fixed a condition where the View Record Dashboard and View Related Action List fields in the records_usage.csv log were not logged correctly while using Tempo.
  • AN-134663 - Medium
    Fixed an issue related to dynamically displaying interface components based on an array condition in the if() function. Now duplicates of the component are no longer displayed. This restores behavior to be consistent with version 18.4 and earlier.
  • AN-135140 - Medium
    Fixes domain name mismatch on certificate from cloud sites
  • AN-136057 - Medium
    Overhead of calling functions in the a! domain has been reduced.
  • 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.
  • AN-134946 - Low
    Binding an Appian Engine to a port already in use now logs a detailed error message and returns error code 100.

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

Resolved Issues

  • Security Updates - High
  • AN-131765 - High
    The version of OpenJDK bundled with the installer is now 8u212b03.
  • AN-132818 - High
    An optimization has been added to enable faster querying of deeply nested CDTs with one to many relationships. A custom property can be set to enable this optimization if customers experience slowness with queries involving deeply nested CDTs.
  • AN-134002 - High
    Application server stability has been improved for Appian Cloud sites that run with application server memory greater than 5GB.
  • AN-123861 - Medium
    Designers and end users now see errors on activity chained interfaces that contain errors instead of displaying nothing.
  • AN-131472 - Medium
    Appian's topology configurations are now more flexible
  • AN-131227 - Medium
    Appian's shutdown process is now more resilient to services stopping out of order
  • 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-1132763 - Medium
    Plug-ins that load classes from the javax.swing.* package now work in Appian Cloud. Prior to this fix, the plug-in smart service or function would fail and an error message similar to the following would be logged by the application server: java.lang.NoClassDefFoundError: Could not initialize class javax.swing.RepaintManager. This returns behavior to that of versions 18.4 and earlier.
  • AN-119314 - Medium
    In High Availability configurations, when an Appian engine is unable to write to disk, that engine will be taken out of the cluster so that it no longer receives traffic.
  • AN-131658 - Medium
    The appian.keystore file is now better protected against potential corruption when starting Appian on a server with no free disk space remaining.
  • AN-131812 - Medium
    The performance of task reports has been improved.
  • AN-126478 - Medium
    Improves performance currently experienced when loading a record list for which 'Export to Excel' is enabled.
  • AN-129783 - Medium
    Fixed a race condition issue related to the addition of multiple users to a new group. Users who have just been added to a new group will no longer see hibernate errors when they access product the product simultaneously.
  • AN-130544 - Low
    When fetchTotalCount is null, the query editor now opens with the fetchTotalCount checkbox unchecked.
  • AN-130674 - Low
    Fixed an issue where the browser window title was not set correctly for Entity Backed Records in Sites. As a result, excessive ERROR level logs being written to the appserver logs is also fixed.
  • AN-131695 - Low
    The logging mechanism for the embedded Tomcat application server is now more memory efficient.
  • 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.
  • AN-132430 - Low
    Fixed a race condition issue related to the creation of Users in Appian. Users will no longer see a "JDBC Batch Update" error which appeared randomly on opening User records that were not correctly stored in the database.

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

Resolved Issues

  • Security Updates - Medium
  • AN-131443 - High
    Fixed an issue that prevented the Document Viewer component from being displayed correctly when using a non-standard top-level domain.
  • 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-130798 - High
    Fixes an issue where an interface would revert back to a previous state and lose the user's input.
  • AN-129865 - Medium
    This migration fixes any existing occurrence of older versions of a data type not being correctly associated with the newer versions. This will prevent errors on import and CDT updates.
  • AN-129840 - High
    Fixes an issue where some caches were not properly removing entries periodically.
  • AN-131226 - Medium
    When creating an interface from a data type, the generated buttons are now correctly wrapped in lists.
  • 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-130960 - Medium
    Fixes an issue where one very large interface context caused a performance degradation in other interfaces.
  • AN-130406 - Medium
    Updated the alert type labels on infrastructure notification emails to be human-readable in the apps portal
  • AN-130402 - Medium
    A query filter that has a null value and uses the "between" operator is now properly ignored if the ignoreFiltersWithEmptyValues parameter is set to true.
  • AN-130272 - Medium
    Empty cells in columns that contain usernames in process reports now display as blank instead of "system null."
  • AN-129632 - Medium
    Fixed an issue that prevented the application server from shutting down.
  • AN-129449 - Medium
    When creating an interface from a data type, an error no longer occurs when the data type has a field that holds a list of boolean values.
  • 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-130416 - Low
    Fixed an issue that resulted in pop up error on reselecting placeholder in operation dropdown.
  • AN-130316 - Low
    Engine leadership election upon site startup is now more stable.
  • AN-129466 - Low
    When importing a change that causes a parent group to gain indirect members, those indirect members will now have the correct permissions inherited from the parent.
  • AN-128658 - Low
    Changing the definition of a data type now results in less network traffic and lower memory usage for the analytics engines.
  • AN-128201 - Low
    Hidden process variables are no longer sent to the process analytics engines, reducing the amount of memory they use.
  • 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 A)


  • Appian now supports using as a SAML identity provider. See SAML for Single Sign-On documentation for details.

  • The Appian Function Details log, appian_functions_details.csv, has been updated to include an additional column that displays the evaluation time of the individual function excluding the evaluation time of its parameters.

Resolved Issues

  • Security Updates - High

  • AN-126930 - High An error in the engine sizing script has been resolved

  • AN-116120 - Medium
    Fixed an issue to prevent visibility expressions in a record list grid column from evaluating on each row

  • 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-126960 - Medium
    Parameters for a!queryFilter are now not evaluated if the showWhen parameter is false.

  • AN-127442 - Medium
    The performance of the Start Process smart service has been improved.

  • AN-128387 - Medium
    Connecting to External JMS Brokers is now supported.

  • AN-128504 - Medium
    Fixed OAuth authorization error for Connected System Plug-ins that occurred after import.

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

  • AN-125603 - Low
    Fixed an issue where clicking on the caption on a rich text icon with a link launched the link.

  • AN-126631 - Low
    Autofill no longer interferes with entering values in date and date time components.

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

  • AN-127101 - Low
    Fixed an issue where the toolbar on the Process Model Metrics page displayed incorrectly for some browsers.

  • AN-127483 - Low
    An error message is now displayed when a designer executes a non-HTTP Integration that is not associated with a Connected System.

  • AN-128290 - Low
    Fixed an issue that reported an invalid session count for Appian Cloud sites with Trusted IP addresses.


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.
    • If the script reports that some files were not deleted, address the reason for the failure (common causes listed below), and run it again until it no longer reports failed deletions.
    • Common causes of failed file deletion include:
    • The file is open in another window or process
    • The file is locked
    • You do not have permission to delete the file
  5. Unzip the contents of the archive that is now located your <APPIAN_HOME> directory.
  6. Delete the deleteFiles script and
  7. If you are using a Web server, copy the content of <APPIAN_HOME>/deployment/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.
  8. Run the configure script to deploy your environment's configuration
  9. 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 19.1 Hotfix Package E is deployed, open the file located in <APPIAN_HOME>/conf/. The contents of this file should match the following code sample: