Dynamics Community Forum Thread Details

Hi experts,

We are experiencing an issue in our Tier 2 environment where PQU 10.0.47 completes the installation successfully but is automatically rolled back after a certain period of time.

This rollback has occurred 7 times over 4 consecutive days, from 11 to 14 August 2026. The last successful run without a rollback was on 27 July 2026.

Based on our investigation, the rollback does not appear to be related to the PQU installation itself. The installation completes successfully, but a DBSync precheck validation that runs after the installation fails, which appears to trigger the rollback.

The logs indicate that the DBSync validation is failing due to a session creation error.

We have also identified the same session creation error occurring independently within the application. The "Open in Microsoft Office" functionality is failing for all users across multiple modules with the same error. This indicates that the issue may be related to a broader environment-level problem rather than being specific to the PQU or DBSync process.

Additionally, we have observed intermittent environment availability. At times the environment is up and accessible, while at other times it becomes unavailable. During the periods when the environment is unavailable, we are receiving HTTP 504 (Gateway Timeout) errors. This intermittent availability and the 504 errors may be related to the session creation issue and should be considered as part of the investigation.
LCS Error Log Details,
Unhandled exception
More Information: Invalid partitionKey parameter arguments passed to the method globalUserGuidCache::getUserGuid
08/14/2026 06:09:39: Microsoft.Dynamics.Ax.Xpp.ErrorException: Failed to create a session; confirm that the user has the proper privileges to log on to Microsoft Dynamics 365 for Finance and Operations.
at Microsoft.Dynamics.Ax.MSIL.Interop.throwException(Int32 ExceptionValue, interpret* ip)
at Microsoft.Dynamics.Ax.MSIL.Interop.createSession(String userId, String company, String language, String partitionKey, Int32 workLoadType)
at Microsoft.Dynamics.Ax.MSIL.Interop.createRunAsSession(String userId, String company, String language, String partitionKey, WorkLoadTypeEnum workLoadType)
at Microsoft.Dynamics.Ax.MSIL.XppSession.Start(String userId, String company, String language, String partitionKey, Int32 workLoadType)
at Microsoft.Dynamics.AX.Framework.Database.Tools.LegacyCodepath.ExecuteWithinAOS(SyncOptions syncOptions, String sqlConnectionString, IMetadataProvider metadataProvider, Func`1 func, Action`1 errorHandler)
at Microsoft.Dynamics.AX.Framework.Database.Tools.LegacyCodepath.RunFullTableSync(SyncOptions syncOptions, String sqlConnectionString, IMetadataProvider metadataProvider)
at Microsoft.Dynamics.AX.Framework.Database.Tools.SyncEngine.FullTableViewSync()
at Microsoft.Dynamics.AX.Framework.Database.Tools.SyncEngine.FullAnalysis()
at Microsoft.Dynamics.AX.Framework.Database.Tools.SyncEngine.RunSync()
at Microsoft.Dynamics.AX.Framework.Database.Tools.SyncEngine.Run(String metadataDirectory, String sqlConnectionString, SyncOptions options)
08/14/2026 06:09:40: DBSync pre-check failed due to a known customer induced error, error code: 131096
08/14/2026 06:09:40: The operation failed.