Unhandled Exception is a hard software crash. It was unable to handle an issue it came across. This can be software bugs with the application it came from, broken things that it expects such as if your Windows installation has an issue, AntiVirus messing things up, or even if the computer has a physical issue.
You simply have to find out what the error is coming from and then go from there. Uninstalling it and not using it, if its not the OS, would be the easiest if you're not seeing any other issues. If you want to keep using it then it ranges from easy to too difficult for you to deal with.