What is Error 1721? Error 1721 always happens in Windows XP and Windows Vista and often occurs when you want to uninstall a program from "Add or Remove Programs." The error message reads like this: "Error 1721. There is a problem with this…

PFN List Corrupt problems occur when important operating system files become misconfigured, deleted or damaged. This is a common problem with computers that don't get maintained regularly. Eventually the system becomes overloaded with prob…