Re-register Windows Update components
Click on Start and then click Run,
net stop WuAuServ
Then "REGSVR32 WUAPI.DLL" (without quotation marks) and press Enter.
When you receive the "DllRegisterServer in WUAPI.DLL succeeded" message, click OK.
Please repeat these steps for each of the following commands:
After the above steps are finished.
net start WuAuServ
Reboot computer now try the updates