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After an Appian upgrade, users are unable to log into the environment when using basic Appian authentication.
Some engine data were not properly copied over during the migration.
This can be confirmed by checking the <APPIAN_HOME>\logs\db_**.log file of the respective engine. The absence log entries of the following type indicates that the engine was not migrated:
<APPIAN_HOME>\logs\db_**.log
[PE1] {ag3.kdb 0} (Base) INFO .migrate "<PERCENTAGE OF MIGRATION>% Migrating from version: <APPIAN VERSION>"
Redo the migration and ensure that all KDB files are properly copied during the migration as explained in this documentation.
This article applies to all versions of Appian.
Last Reviewed: August 2018