back up registry before doing this but here is the step you need to take.
1. Click Start, type regedit in the Start Search box, and then press ENTER.
2. Locate and then click the following registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\EventSystem\{26c409cc-ae86-11d1-b616-00805fc79216}\EventClasses\{FAF53CC4-BD73-4E36-83F1-2B23F46E513E}-{00000000-0000-0000-0000-000000000000}-{00000000-0000-0000-0000-000000000000}
3. Locate the TypeLib registry value.
NOTE The registry type of TypeLib should be shown as REG_EXPAND_SZ. If that is not the case, you have to delete the key, and then you have to recreate the key. To do this, follow these two steps:
a. Select the TypeLib registry value, and then delete it.
b. Create a new Expandable String Value, and then name it TypeLib.
4. Double-click the TypeLib registry value. In the Value Data box, type %systemroot%\system32\EVENTCLS.DLL, and then click OK.
5. Close Regedit.
6. Click Start, type services.msc in the Start Search box, and hit Enter.
7. Right-click the following services one at a time and click Restart:
• COM+ Event System
• Volume Shadow Copy
8. Close the Services snap-in.
9. Open an elevated command prompt, type vssadmin list writers, and then hit ENTER.
10. Verify that the VSS writers are now listed.
