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How To: Fix ‘Cryptographic Service’ error when installing Windows XP Updates

· One min read

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.

If the above solution’s do not work. You can use a tool called Dial A Fix to repair the Cryptographic & Windows Update services with a few clicks.