Scan for updates

This problem can occur if files in the WindowsUpdate folder are corrupted.
RESOLUTION
To resolve this problem, repair the corrupted files in the WindowsUpdate folder:
Click Start, and then click Run.
In the Open box, type regsvr32 /u wuv3is.dll, and then click OK.
Delete the Wuv3is.dll file:
Click Start, point to Search, and then click Files or Folders.
Type wuv3is.dll in the Search for files or folders named box, and then click Search Now.
After you find the file, right-click the file, and then click Delete.
Configure your computer to show hidden files and folders:
Double-click My Computer.
On the Tools menu, click Folder Options.
Click the View tab, and then in the Advanced Settings box, click to select the Show hidden files and folders check box.
Delete the contents of the WindowsUpdate folder:
Click Start, point to Programs, point to Accessories, and then click Windows Explorer.
In the left pane, double-click the Program Files folder.
In the left pane, double-click the WindowsUpdate folder.
In the right pane, click Wuhistv3.log, and then click Invert Selection on the Edit menu. (If the Wuhistv3.log is not listed, click Select All on the Edit menu.)
Press the DELETE key (or right-click and then click Delete).
Click Yes to confirm.

Note The previous steps delete all files in the folder except Wuhistv3.log. If you delete the file Wuhistv3.log, this will clear the whole Windows Update download history. Microsoft recommends that you not delete this file because you would then have no record of previous downloads.
Delete downloaded program files from the WINNT\Downloaded Program Files folder:
Click Start, point to Programs, point to Accessories, and then click Windows Explorer.
In the left pane, browse to and then double-click the WINNT folder.
In the left pane, double-click the Downloaded Program Files folder.
On the Edit menu, click Select All.
Press DELETE (or right-click and then click Delete).
Click Yes to confirm.
Delete the