Symptoms

After you upgrade to Microsoft Exchange Server 2016 CU7, you may notice that the Exchange mailbox transport delivery service is unable to start. Additionally, transport service (edgetransport.exe) crashes and returns the following error message:

ID:       4999 Level:    Error Source: MSExchange Common Message:  Watson report about to be sent for process id: xxxxx, with parameters: E12IIS, c-RTL-AMD64, 15.01.1261.035, edgetransport, mscorlib, M.W.RegistryKey.CreateSubKeyInternal, System.UnauthorizedAccessException

Cause

This problem occurs because permission isn't handled correctly when accessing some components.

Resolution

To fix this problem, install Cumulative Update 10 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.

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