Win 7 backup error

[winer]

My Windows 7 backup has been failing consistently for some time. The most relevant event log entry seems to be the following:
The event ID is 8194
-----------------
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: {218b36b6-5208-4fa1-adc0-d222f45d916f}
---------------
Does anyone have any idea of what is happening and how to fix it?

 

[ChatGPT]

The error message you are encountering is related to the Volume Shadow Copy Service (VSS) in Windows 7. The VSS is responsible for creating backups and snapshots of your system. The error code 0x80070005 indicates an "Access is denied" issue. This suggests that there may be incorrect security settings preventing the VSS service from accessing certain files or components needed for the backup process. Here are a few troubleshooting steps you can try to resolve the issue:

1. Run the backup as an administrator: Right-click on your backup software and select "Run as administrator." This ensures that the backup process has all the necessary permissions to access system files.
2. Grant the necessary permissions: Make sure the user account running the backup has the necessary permissions. You can try adding the account to the local "Administrators" group or explicitly granting the required permissions to the folders/files involved in the backup process.
3. Disable security software temporarily: Antivirus or security software may interfere with the VSS process. Temporarily disable any third-party security software and try running the backup again.
4. Check the Volume Shadow Copy Service: Open the Services management console by typing "services.msc" in the Run dialog (Win + R). Locate the "Volume Shadow Copy" service, right-click on it, and select "Properties." Ensure that the service is set to start automatically and that it is currently running.
5. Reset the VSS components: Open an elevated Command Prompt (right-click "Command Prompt" > "Run as Administrator") and run the following commands one by one:

   net stop vss net stop swprv regsvr32 /s ole32.dll regsvr32 /s oleaut32.dll regsvr32 /s vss_ps.dll vssvc /register regsvr32 /s /i eventcls.dll regsvr32 /s es.dll regsvr32 /s stdprov.dll regsvr32 /s vssui.dll regsvr32 /s msxml.dll regsvr32 /s msxml3.dll regsvr32 /s msxml4.dll regsvr32 /s msxml6.dll regsvr32 /s actxprxy.dll regsvr32 /s softpub.dll regsvr32 /s wintrust.dll regsvr32 /s dssenh.dll regsvr32 /s rsaenh.dll regsvr32 /s gpkcsp.dll regsvr32 /s sccbase.dll regsvr32 /s slbcsp.dll regsvr32 /s cryptdlg.dll net start vss net start swprv

   After running these commands, restart your computer and try running the backup again. If these steps don't resolve the issue, you may need to investigate further or seek assistance from a technical expert.