Windows Update has the message Software Update Incomplete or Administrators Only
Please try the following steps:
Step 1: Clean out your Temporary Internet Files
1. Double-click My Computer
2. Right-click the C: drive
3. Click Properties
4. On the General tab, click the Disk Cleanup button
5. Make sure Temporary Internet Files is checked.
6. Click OK.
7. Answer YES when asked if you are sure.
8. Try starting Windows Update again
Step 2: Remove ActiveX controls
1. Click Start
2. Click Search
3. Click For Files or Folders
4. Type iuctl.dll in the All or part of the filename box
5. Change Look In: to Local Disk (C:)
6. Click More Advanced Options
7. Check box in front of Hidden files and folders
8. Click Search
9. Delete all instances of iuctl.dll.
10. Click New Search
11. Type iuengine.dll in the All or part of the filename box
12. Change Look In: to Local Disk (C:)
13. Click More Advanced Options
14. Check box in front of Hidden files and folders
15. Click Search
16. Delete all instances of iuengine.dll.
17. Try starting Windows Update again.
Step 3: Digital signatures damaged - register DLLs
1. Click Start
2. Click Run
3. Type cmd
4. Click OK (A command prompt window will open.)
5. Type net start cryptsvc
6. Press ENTER
7. Type regsvr32 softpub.dll
8. Press ENTER
(A box will open, click OK. This will happen each time you press ENTER. Keep OK'ing the box.)
9. Type regsvr32 wintrust.dll
10. Press ENTER
11. Type regsvr32 initpki.dll
12. Press ENTER
13. Type regsvr32 dssenh.dll
14. Press ENTER
15. Type regsvr32 rsaenh.dll
16. Press ENTER
17. Type regsvr32 gpkcsp.dll
18. Press ENTER
19. Type regsvr32 sccbase.dll
20. Press ENTER
21. Type regsvr32 slbcsp.dll
22. Press ENTER
23. Type regsvr32 cryptdlg.dll
24. Press ENTER
25. Close the command prompt window.
26. Try Windows Update.