Running the report “Group Policy Modeling Report” or “Differences Report” throws an error.
Note: in the event log nothing is visible.
A comma in the user DN causes the issue.
The issue is a known issue that under Defect ID VSTS000305390 Group Modelling Reports crash if the user DN contains a comma.
The issue was resolved in GPOADmin 5.17.
Upgrade to the latest version to resolve the issue.
