Error: 0x80072f8f

What causes Error 0x80072f8f
# The date / time on your computer is too different from the date / time of the SSL (Secure Sockets Layer) certificates used by the Windows Update site..
To resolve this error, use one of the following methods:
Resolution Suggestion One:
# Check you have the correct time and date and time zone:
1. Double click the clock in the bottom right hand corner. 2. Check you have the correct time and date. 3. Click the Time Zone Tab. 4. Check you have the correct time zone.
Resolution Suggestion Two:
# Re-register these important files and check IE settings:
1. Click Start. 2. Choose Run. 3. In the Run box, type: regsvr32 Mssip32.dll 4. Click OK. 5. Repeat this time typing: regsvr32 Initpki.dll
...now
6. Open Internet Explorer7. Select the Tools menu and then select Internet Options8. Choose the Advance tab 9. Unselect 'check for server certificate revocation' reboot PC and test again!