And if you restart it does it work then? (or if you use parallelism=1 for the client)

Can you install the below KB from Microsoft and try the backup?

https://support.microsoft.com/en-us/kb/2996928

No that didn't work, I going to try and install the KB's and see if that helps

My DAG (Exchange 2013) backup

Hi KD11 

Is it file system or Application backup?

Try please to change the Client Retries to "0", to make sure you don't invoke VSS more than once, which is not supported.

Also try to increase the VSS timeout:

HKLM\Software\Microsoft\windows NTCurrentVersion\SPP\CreateTimeOut and set it to 12000000,  which is 20 minutes..

Thank you,

Carlos

It's my DAG (Exchange 2013) backup, after I had stop & start the services & re-register some .dll's, etc. ( over & over) now I'm receiving:

  77259:save: VSS reports adding volume [\\?\Volume{114dccc6-132e-11e6-80b4-806e6f6e6963}\] to snapshot set failed for both hardware/software provider.VSS OTHER: ERROR: VSS failed to process snapshot: The volume shadow copy provider is not registered in the system. (VSS error 0x80042304) 90108:save: Unable to save the SYSTEM STATE save sets: cannot create the snapshot. 86024:save: Error occured while saving disaster recovery save sets. dione.bskb.com:DISASTER_RECOVERY:\: retried 1 times.