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Symptoms

In Control Panel, the Add/Remove Programs item doesn't display the updated Microsoft Exchange Server version after you apply a security update. This issue occurs because the registry value at the corresponding path is updated incorrectly during the installation.

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.

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