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VSS error using IFW on Win 11?

Posted: Sun Jul 13, 2025 9:30 pm
by timg11
I just upgraded my system to Windows 11, and did a backup with IFW 4.05 running GUI from elevated CMD prompt.

It seems to be working, but I noticed this error in the Windows Application Log about the time I started IFW running.

Code: Select all

Volume Shadow Copy Service error: Unexpected error querying for the IVssWriterCallback interface.  hr = 0x80070005, Access is denied.
. This is often caused by incorrect security settings in either the writer or requestor process. 

Operation:
   Gathering Writer Data

Context:
   Writer Class Id: {e8132975-6f93-4464-a53e-1050253ae220}
   Writer Name: System Writer
   Writer Instance ID: {5ff587e0-28f2-4bc8-a3b3-959ab3995a9b}

Should I be concerned?

Re: VSS error using IFW on Win 11?

Posted: Sun Jul 13, 2025 11:59 pm
by TeraByte Support