NotificationClient logs aren't purged and consume lots of disk in Exchange Server 2019 and 2016

Applies to: Exchange Server 2019Exchange Server 2016

Symptoms


In Microsoft Exchange Server 2019 or Exchange Server 2016, you find many logs accumulate in the following location, which consumes lots of disk:

C:\Program Files\Microsoft\Exchange Server\V15\Logging\NotificationBroker\Client

Resolution


To fix this issue, install one of the following updates:
For Exchange Server 2019, install the Cumulative Update 4 for Exchange Server 2019 or a later cumulative update for Exchange Server 2019.
For Exchange Server 2016, install the Cumulative Update 15 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.