Try this.
Start Notepad. To do this, click Start , and then click Run .
2. Copy and then paste (or type) the following command in the Open box, and then press ENTER:
notepad
3. Copy and then paste (or type) the following command lines into the Notepad window:
net stop wuauserv
cd %systemroot%\SoftwareDistribution
ren Download Download.old
net start wuauserv
4. On the File menu, click Save As , and then type Rename.bat .
5. Click Save as type , and then click All Files .
6. Save the Rename.bat file to your desktop.
7. Double-click the Rename.bat file to rename the Download folder.
8. Try to install updates again.
9. If the issue is resolved, delete the Rename.bat file that you created in the previous steps.