Ok you bought it how do you install it? * In succesive renewal years, remove the old certificate from the store before importing the new spc and pvk. * Make sure you installed the signing code stuff into a path (Assuming C:\Tools\Path) * Import the key into computer keystore c:\tools\path\PVKIMPRT.EXE -IMPORT mycredentials.spc myprivatekey.pvk * You'll be prompted for the private key phrase. * Use IE Window, look at certs. Tools | Internet Options | Content | Certificates * Personal Tab should show the cert. * Click on View. Go to Details path. * Take note of thumbprint. * When Signing code: signcode '-n "NAME_OF_PRODUCT " -i "http://www.example.com/" -sp chain ' . '-sha1 "THUMBPRINT" ' . '-t "http://timestamp.verisign.com/scripts/timstamp.dll" -a sha1' . $filename * Note: Use a full path for $filename * Note: THUMBPRINT should have no spaces.