Symptoms
When you run the Search-AdminAuditLog cmdlet, the results show an incorrect RunDate that's neither in Coordinated Universal Time (UTC) nor in the time zone of Exchange Server 2016. This causes a blank page in the administrator Audit Log report in the Exchange Admin Center (EAC).
Cause
This issue occurs because the time zone of the RunDate rule in the system mailbox isn't handled correctly.
Resolution
Exchange Server 2016
To resolve this issue, install Cumulative Update 9 for Exchange Server 2016 or a later cumulative update for Exchange Server 2016.
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
References
Learn about the terminology that Microsoft uses to describe software updates.