FIXED – IVssWriterCallback interface access is denied when taking VSS Snapshot

IVssWriterCallback interface. hr = 0x80070005, Access is denied

The problem occurred when trying to take a Disk2VHD of the server to convert to a virtual server from physical. See below for event viewer logs.

ivsswritercallback interface access is denied
ivsswritercallback interface access is denied
ivsswritercallback interface access is denied

The fix was to look in regedit under HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\VSS\Providers

Expand each folder and look in the CLSID folder and the REG_SZ to the right for the corresponding GUID that is causing issues as per the event viewer logs.

Backup the Key and then rename and try the Disk2VHD again.

ivsswritercallback interface access is denied
ivsswritercallback interface access is denied

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