I cannot backup Exchange Server and found 5 error at event viewer. Please see below. Thanks a million!

1. Event D 9857

Exchange VSS Writer (instance 1c977bdc-f1b9-45e8-9655-71368bee3224) has detected an orphaned backup instance (d0a44f2a-a3f9-4ab2-a1a2-5dd0b6cffbf4). This means that the instance successfully completed the OnPrepareBackup phase, but was abandoned after that (without any further calls into the Exchange VSS Writer). The instance has been reclaimed.

2. Event ID 2140

The Microsoft Exchange Replication service VSS Writer encountered an error in function Microsoft::Exchange::Cluster::ReplicaVssWriter::CReplicaVssWriterInterop::PrepareBackup. HResult -2146233079. Error: System.InvalidOperationException: Nullable object must have a value.
   at System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource)
   at System.Nullable`1.op_Explicit(Nullable`1 value)
   at Microsoft.Exchange.Cluster.ReplicaVssWriter.CReplicaVssWriterInterop.PrepareBackupReplica(IVssComponent* pComponent, ReplayConfiguration replica, BackupInstance backupInstance)
   at Microsoft.Exchange.Cluster.ReplicaVssWriter.CReplicaVssWriterInterop.PrepareBackup(IVssWriterComponents* pComponents)

3. Event ID 2024

The Microsoft Exchange Replication service VSS Writer (Instance 1c977bdc-f1b9-45e8-9655-71368bee3224) failed with error 80131509 when preparing for a backup.

4. Event ID 8229

A VSS writer has rejected an event with error 0x800423f3, The writer experienced a transient error.  If the backup process is retried,
the error may not reoccur.
. Changes that the writer made to the writer components while handling the event will not be available to the requester. Check the event log for related events from the application hosting the VSS writer.

Operation:
   PrepareForBackup event

Context:
   Execution Context: Writer
   Writer Class Id: {76fe1ac4-15f7-4bcd-987e-8e1acb462fb7}
   Writer Name: Microsoft Exchange Replica Writer
   Writer Instance Name: Exchange Replication Service
   Writer Instance ID: {79312120-c1e5-4f4a-9fbc-383f231546a8}
   Command Line: "C:\Program Files\Microsoft\Exchange Server\V14\bin\msexchangerepl.exe"
   Process ID: 4044

5. Event ID 2032

The Microsoft Exchange Replication service VSS Writer (Instance 1c977bdc-f1b9-45e8-9655-71368bee3224) failed when terminating the backup.

Hi Gordon,

Thank you for your question.

We could restart Volume Shadow Copy service to check if issue persist.

If not, we could restart Exchange server to drop d0a44f2a-a3f9-4ab2-a1a2-5dd0b6cffbf4 instance.

If the issue persist, I suggest you post this case to Window server forum by the following link:

https://social.technet.microsoft.com/Forums/office/en-US/home?category=exchangeserver%2Cofficeitpro%2Clync%2Csharepoint%2Cwindowsserver%2Coffice2010%2Cvisio2010&filter=alltypes&sort=lastpostdesc

If there are any questions regarding this issue, please be free to let me know.

Best Regard,

Jim

Finally, I modified regedit HKLM\Software\Microsoft\ExchangeServer\V14\Replay\Parameters

New DWORD , Name = EnableVSSWriter, value=0

Restart Exchange Replicate Service. 

It work.

• Marked as answer by Gordon Bower 5 hours 50 minutes ago