VSS error "vss_e_provider_veto", "vss_e_bad_state", "vss_e_unexpected_provider_error", "vss_e_insufficient_storage" (4037344)

The backup of a Windows Client, including File System, SQL Server, Exchange Server, SharePoint, may fail with with various Volume Shadow Copy  (VSS) errors. These may include:

vss_e_insufficient_storage

vss_e_unexpected_provider_error

vss_e_bad_state

vss_e_provider_veto

To determine the cause of the error there are sveral things you can look at.

- Look at the Windows Event viewer on the server that failed to backup. Check the Application and System logs for vss related errors.

- From a command promted started with Administrator privilage run the command

       vssadmin list writers

            this will display the status of all the vss writers on the server. they should all show

            State: [1] Stable

            Last error: No error

- From a command promted started with Administrator privilage run the command

      vssadmin list shadowstorage

           this will display the amount of disk space used for shadow copies

- From a command promted started with Administrator privilage run the command

      vssadmin list shadows

           this will show all current shadow copies and when they were created

For additional information on troubleshooting vss issues see Microsoft website.

http://technet.microsoft.com/en-us/library/ee692290%28v=ws.10%29.aspx