Symptoms
Consider the following scenario:
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You have an Exchange Server 2016 environment that has parent and child domains.
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Exchange Server is installed in the root domain.
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A user in a child domain logs in to Outlook Web Access (OWA).
In this scenario when the user accesses OWA Voice mail options (OWA -> Options -> General -> Voice mail -> Notifications), they receive the following error message:
There was a problem loading your options. Please try again.
Note This error occurs for the following options:
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Notifications
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Greetings
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Outlook Voice Access
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Play on Phone
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Voice Mail Preview
Cause
This issue happens because the ViewEntireForest parameter is not set to True when some Unified Messaging cmdlets are initialized.
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.
