I spent hours on this, also with MS support, but no joy. Finally I found the procedure described below which fixed the problem. Since I am not a developer please do not shoot me if it doesn't work for you or even if it caused more problems. I would be interesting to see if it works for you also Here goes: First: 1. Bring up an elevated (Administrator) command prompt 2. Execute the following commands sequentially: a. fsutil resource setautoreset true c:\ b. cd /d %windir%\system32\config\txr c. attrib -r -s -h * d. del * Second: Start an elevated (Administrator) cmd.exe Type: Cd %windir%\System32\SMI\Store\Machine Type: Attrib –a –h –s *.TM* Type: Del *.TM* NOW REBOOT! After reboot updates should install Had same problem with 19 updates. Followed above instructions and it worked great. Many thanks.