Get-CASMailbox uses wrong LDAP filter for ECPEnabled in Exchange Server 2019 and 2016

Symptoms

In Microsoft Exchange Server 2019 or Exchange Server 2016, consider the following scenario:

  • For any user, change the ECPEnabled parameter value to $false by using the following Set-CASMailbox cmdlet:

Set-CASMailbox NoEcp01 -ECPEnabled $false

  • You use the following Get-CASMailbox cmdlet to view the change that you made:

Get-CASMailbox -Filter ECPEnabled -eq $false'

In this situation, the output should be:

Name    ECPEnabled

----    ----------

NoECP01      False

However, the Get-CASMailbox cmdlet doesn't return any results even if the ECPEnabled parameter is set to $false.

Cause

This issue occurs because a wrong Lightweight Directory Access Protocol (LDAP) filter is used when you run the Get-CASMailbox cmdlet for the ECPEnabled parameter.

Resolution

To fix this issue, install one of the following updates:

For Exchange Server 2019, install the Cumulative Update 7 for Exchange Server 2019 or a later cumulative update for Exchange Server 2019.​
For Exchange Server 2016, install the Cumulative Update 18 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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