Certain users are unable to login to the site and fail with the following error in the logs:
ERROR com.appiancorp.security.auth.AppianPortalSessionAuthenticationStrategy - com.appiancorp.suiteapi.common.exceptions.InvalidUserException: User does not exist
Running a checkengine -s -u lists the missing user in its output as well.
checkengine -s -u
This usually happens when the users aren’t propagated across all engines.
If the rename plugin was used for this user, do NOT follow the action listed below. Open a support case to investigate this further.
If this is after a migration, verify the logs of type db_*.log for all Appian engines and confirm the migration message appears on all of them and that the ID of the engine database file *.kdb corresponds to the migrated one.
Run the checkengine script with the cu flags, so it would look like ./checkengine.sh -cu. If you execute this script after running the Rename User plug-in, this could cause further problems. Please open a support case if the above symptoms come up after running the missing user plug-in.
More information on the checkengine script can be found here
This article applies to Appian 16.1 and earlier.
Last Reviewed: July 2016
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