I have a bit of an odd problem with the backup console in Windows Server 2012 which someone may be able to help with.
The server in question is Windows Server 2012 Standard which is being used a Hyper-V host with two guests. Windows backup is installed and configured to backup the host and the guests. Some of the backups are completing successfully, others are completing with warnings. When double clicking on the job in the Windows Backup console to get further details on the job, the successful backup results display without any problems. However when double clicking against the backups that complete with warnings, the mmc crashes and the following is displayed:
blbmmc.dll - MMC has detected an error in a snap-in and will unload it.
After clicking ok, the following is displayed:
Object reference not set to an instance of an object.
Exception type: System.NullReferenceException
Exception stack trace:
at Microsoft.SnapIns.Backup.UI.WindowsBackupNode.OnApplicationThreadException(Object sender, ThreadExceptionEventArgs e)
at System.Windows.Forms.Application.ThreadContext.OnThreadException(Exception t)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
I have tried running sfc /scannow which hasn't detected any problems. Windows Backup has been uninstalled and reinstalled to no avail. I suspect that it may be a .net framework issue, so tried installing .net 3.5 through Server Manager but this hasn't helped either. Does anyone have any ideas that may get this problem resolved? Thanks in advance.