How to Troubleshoot Cryptographic Services Error ?

Whenever I try to apply the Security Updates or Service Pack 1 on my Windows Operating Systems, I get an error about the Cryptographic services.
How do I troubleshoot this cryptographic services error?

Are you getting the following error when you try to install
Windows XP Service Pack 1?

"Service Pack 1 Setup Error:

Setup could not verify the integrity of the file Update.inf.
Make sure the Cryptographic service is running on this computer"

Troubleshoot :
If you are trying to install Windows XP Service Pack 1, follow this :

The first thing is to be aware of is that Microsoft themselves are aware of this issue and have released a fix to the database corruption issue...
First we must just check the Cryptographic Services is actually running on your machine.

To do this:

Start the Administrative Tools utility in Control Panel.
Double-click Services. (this will open the services window)
Right-click Cryptographic Services, and then click Properties.
Click Automatic for Startup type, and then click Start.

You can now try to reinstall Windows XP Service Pack 1

In order to get rid of Cryptographic Services Error while applying security updates or installing Sp-1, you can

Click Start >> Select Run >> type the following text in the run registry:

net stop cryptsvc ren %systemroot%\system32\catroot2 oldcatroot2 net start cryptsvc regsvr32 softpub.dll regsvr32 wintrust.dll regsvr32 initpki.dll regsvr32 dssenh.dll regsvr32 rsaenh.dll regsvr32 gpkcsp.dll regsvr32 sccbase.dll regsvr32 slbcsp.dll regsvr32 cryptdlg.dll

The main cause of getting cryptographic services error may be the Cryptographic Services service is not running, or not configured correctly.

Solution:

• Ensure that the Cryptographic Services service is running on your computer. To check this, open Control Panel >> Administrative Tools >> Services.
• Select Cryptographic Service from the list of names >> Right-click this service >> Select Properties.
• If the service is not shown as "Started", you can start it by clicking the Start button. You should also set the Startup type to Automatic so that it will be running when needed in future.
• Close the Services control panel and try installing the service pack or security patch.
• If the Cryptographic Services service was already running, stop the service by clicking the Stop button.
• Using Windows Explorer, locate the folder C:\Windows\System32\catroot2 and rename it to something like xcatroot.
• Now restart Cryptographic Services by clicking the Start button, and try installing the service pack or security patch again.
• If the service pack or security patch still fails to install, stop the Cryptographic Services service again. Open a command prompt window (click Start, Run, type cmd and hit Enter) and then type the following commands:

regsvr32 softpub.dll
regsvr32 wintrust.dll
regsvr32 initpki.dll
regsvr32 dssenh.dll
regsvr32 rsaenh.dll
regsvr32 gpkcsp.dll
regsvr32 sccbase.dll
regsvr32 slbcsp.dll
regsvr32 cryptdlg.dll

• Restart Cryptographic Services by clicking the Start button again, and try installing the service pack or security patch once more.