try this
1. Go to Start --〉 Run
2. Type in regsvr32 Softpub.dll then click ok
3. Go to Start --〉 Run, this time type in regsvr32 Mssip32.dll and click ok
4. Go to Start --〉 Run, this time type in regsvr32 Initpki.dll and click ok (you have to wait longer for this command - i think about 35 seconds)