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We have a chronic issue with our Exchange Server 2013 environment. Currently, our environment consists of a single Exchange Server. After installing the latest Windows Server 2012 r2 security rollup, the Microsoft Exchange Replication Service stopped working and the Exchange DB changed to an unmounted service. We were finally able to restore operation of the Exchange Server by recovering the DB and remounting. We found out post rollup, from Microsoft support, that there was an issue with .NET 4.7 Framework installation which was included in the latest rollup and was not fully tested on the version of Exchange that we are currently operating. We were able to successfully roll back from the update. However, there is an ongoing issue with the Microsoft Exchange Replication service, wherein it crashes and does not restart. When the service is not running, it causes issues with OWA, ActiveSync and Mailobox Transport. All incoming messages remain in the SMTP queue and are not delivered. Once the Mailbox Exchange Replication service has been restarted, Exchange operation appears to return to normal and Mail flow resumes. One of the directly related error messages posted in the Application Event log is below:

Faulting application name: msexchangerepl.exe, version: 15.0.1320.0, time stamp: 0x58fe8372
Faulting module name: KERNELBASE.dll, version: 6.3.9600.18666, time stamp: 0x58f33794
Exception code: 0xe0434352
Fault offset: 0x00000000000095fc
Faulting process id: 0x76bc
Faulting application start time: 0x01d326fa734d320a
Faulting application path: C:\Program Files\Microsoft\Exchange Server\V15\bin\msexchangerepl.exe
Faulting module path: C:\Windows\system32\KERNELBASE.dll
Report Id: b1631381-92ed-11e7-8102-44a84227b62b
Faulting package full name:
Faulting package-relative application ID:

Any suggestions you may have as to how to remedy this are greatly appreciated. Microsoft (paid) support just restarts the service and says it's fixed.....but, then it recurs.... Thank you!
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Expert Comment

by:Brian B
Hi Justin,
It sounds like you have a question, but you have entered this as a post. To get a response from the Experts, best to ask it as a question. You can use this link: https://www.experts-exchange.com/askQuestion.jsp
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Author Comment

by:Justin Flowers
Thank you, Brian! Much appreciated!!!!
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LVL 27

Expert Comment

by:Brian B
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