This will guide you through how to remove Pirform. Take care to read about the option to remove your certificate data.
 Uninstall using Apps and Features
Go to Apps and Features in Windows Settings, find Pirform and click Uninstall twice:
(If you're using Windows 7 you need to use Add/Remove Programs from Windows Control Panel.)
 Uninstall Pirform
Note: to keep all your certificates on the computer, make sure the option "Remove all Pirform data" is NOT TICKED.
Then click the button marked Uninstall to remove Pirform. If you have not ticked the option to "Remove all Pirform data?" then your certificates will remain on your PC and can be accessed again when you reinstall Pirform.