Error del Servicio de instantáneas de volumen: error al crear la clase de proveedor de instantáneas COM con Id. {790f2886-9889-4c99-8ef5-531add05d044}

Tipo de suceso: Error
Origen del suceso: VSS
Categoría del suceso: Ninguno
Id. suceso: 12292
Fecha: 9/9/2010
Hora: 3:22:25 PM
Usuario: No disponible
Equipo: SISTEMASR8
Descripción:
Error del Servicio de instantáneas de volumen: error al crear la clase de proveedor de instantáneas COM con Id. {790f2886-9889-4c99-8ef5-531add05d044} [0x8007007e].

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 {5fc845eb-f299-40f0-9725-34045f7ea8ba} and Name HWPRV is [0x80004002, No such interface supported

Cause: This error is caused by faulty Acronis software and SYMANTEC BACKUP EXEC removed from a system

Symptoms: Some BackupChain backup software customers have reported to us that the software was not able or very slow to back up locked files and appeared to be 'stuck'. The Event Viewer (Control Panel -> Administrative Tools -> View Event Logs) contained the message above. Specifically look for the text: HWPRV and 5fc845eb-f299-40f0-9725-34045f7ea8ba in the Event View messages.

Another symptom is a very long VSS snapshot generation time.

This error is caused by faulty Acronis software. If you currently use Acronis or have recently uninstalled Acronis and now have problems with other backup programs, follow the steps outlined below.

Resolution:

Step 1: Open the Registry Editor (Start -> Run -> enter "regedit", hit enter)

Step 2: Navigate to the entry HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\VSS\Providers

Step 3: (optional) Right-click on the entry {5fc845eb-f299-40f0-9725-34045f7ea8ba} or {f5dbcc43-b847-494e-8083-f030501da611} and export it to a file so you have a backup of it, just in case. You can confirm it's Acronis by opening it up and checking the provider name. It points to a DLL called snapapi.dll (or similar name)

Step 4: Delete the tree {5fc845eb-f299-40f0-9725-34045f7ea8ba} or {f5dbcc43-b847-494e-8083-f030501da611}

Step 5: (optional but recommended): Open the Command Prompt with administrator rights (Start -> All programs -> Accessories -> Right click on Command Prompt and select Run as Administrator) and enter: vssadmin delete shadows /all to clean up any dead VSS snapshots that may be slowing down your machine