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.