This behavior is symptomatic of any of the following:
- Cryptographic Services is disabled.
- Database or log file corruption in %Systemroot%\System32\Catroot2.
- Windows files are missing or damaged.
To fix this behavior:
01. Right-click My Computer and press Manage.
02. Expand Services and Applications.
03. Double-click Services.
04. Double-click Cryptographic Services.
05. Make sure that the Startup Type is set to Automatic and that the service
is started. If not, set it, press Apply and OK. Shutdown and restart Windows
XP and retry the update.
06. If the update still fails, open a CMD.EXE prompt and type:
net stop cryptsvc
ren %systemroot%\system32\catroot2 oldcatroot2
net start cryptsvc
07. Exit the CMD prompt and retry you update. If it succeeds, exit this
procedure.
08. Open a CMD.EXE prompt and type:
sfc /purgecache
When you receive Windows File Protection successfully made the requested
change, type:
sfc /scannow
09. When the command completes, try your update. If it succeeds, exit this
procedure.
10. Perform an in-place upgrade of Windows XP.
11. Reinstall your latest Service Pack, hotfixes, and updates.
