Windows Update Error 80200056?
This Windows Update error 80200056 occurs if a Windows Update client or a Microsoft Update client cannot access the user token. To fix this issue, you need to stop, and then restart the Windows Update Service and also close any Windows Update or Microsoft Update browser windows that are open.
Click on Start, then type Command Prompt, inside the search area box and then on the list of results, right-click Command Prompt, and then choose Run as Administrator. If they ask you for an administrator password or any confirmation, then type in the password or provide confirmation, then type in the following commands. Press ENTER key after each command: net stop wuauserv, net start wuauserv. Close the command prompt window. Try to install updates again and it should be fixed.