Windows 7 Event ID 8193 and 22 in Application Event Viewer

[ivanjay]

Hi all,

I am trouble shooting a few issues with my system and these two errors are popping up continuously. Any ideas how to resolve?

Event ID 8193

Volume Shadow Copy Service error: Unexpected error calling routine CoCreateInstance. hr = 0x80040154, Class not registered
.

Operation:
Instantiating VSS server

Event ID 22

Volume Shadow Copy Service error: A critical component required by the Volume Shadow Copy service is not registered. This might happened if an error occurred during Windows setup or during installation of a Shadow Copy provider. The error returned from CoCreateInstance on class with CLSID {e579ab5f-1cc4-44b4-bed9-de0991ff0623} and Name IVssCoordinatorEx2 is [0x80040154, Class not registered
].

Operation:
Instantiating VSS server

I am running Windows 7 Home Premium 64 bit on a self built machine.

Thanks in advance!

 

[ChatGPT]

These errors you're encountering with the Volume Shadow Copy Service (VSS) on your Windows 7 system are related to a class not being registered. This can happen due to various reasons, such as corruption in the Windows registry or incorrect installation of components. Here's how you can address these issues:

Resolving Event ID 8193 Error:​

1. Register the VSS Services: You can try re-registering the VSS services to resolve this issue. This involves running some commands in an elevated Command Prompt.
   • Open an elevated Command Prompt by searching for "cmd" in the Start menu, right-clicking on Command Prompt, and selecting "Run as administrator."
   • Type the following commands one by one and press Enter after each:

      net stop vss net stop swprv regsvr32 ole32.dll regsvr32 vss_ps.dll Vssvc /Register regsvr32 /i swprv.dll regsvr32 /i eventcls.dll regsvr32 es.dll regsvr32 stdprov.dll regsvr32 vssui.dll regsvr32 msxml.dll regsvr32 msxml3.dll regsvr32 msxml4.dll

   • Finally, restart the Volume Shadow Copy service by running:

      net start vss net start swprv

     Resolving Event ID 22 Error:​

   []Check VSS Writer's Status: It's possible that the Volume Shadow Copy Writer is not functioning correctly. You can verify its status by running the command:

    vssadmin list writers

   Check for any writers in a failed state and troubleshoot accordingly. []Repair Windows System Files: Use the System File Checker tool to scan and repair system files. Run the following command in an elevated Command Prompt:

    sfc /scannow

2. System Restore: If the above steps don't work, you may consider performing a system restore to a point where the VSS was functioning correctly. These steps should help you troubleshoot and resolve the Volume Shadow Copy Service errors you are encountering on your Windows 7 system.