We had Windows 2008 SP2 Server. It was crashed due to mother board problem. After we got new motherboard we have installed Windows 2008 R2. Now when we try to attach Old VHD File we are getting following issue. Failed to add device 'Microsoft Virtual Hard Disk'. Cannot open attachment 'D:\Test\test.vhd'. Error: 'A virtual disk support provider for the specified file was not found.' TestVM': Cannot open attachment 'D:\Test\test.vhd'. Error: 'A virtual disk support provider for the specified file was not found.' (0xC03A0014). (Virtual machine ID 5626AAB2-C21C-48FF-8B70-40671CBC573B)