Symptoms
Using PerfView generates a "bad signature" error in Microsoft Exchange Server 2019 and 2016. This issue occurs in PerfView 1.9.0.
Resolution
To fix this issue, install one of the following updates:
Cumulative Update 11 for Exchange Server 2019 or a later cumulative update for Exchange Server 2019
Cumulative Update 22 for Exchange Server 2016 or a later cumulative update for Exchange Server 2016
References
Learn about the terminology that Microsoft uses to describe software updates.