What is an Unhandled Exception?
Windows has inbuilt exception handling features whenever an error like this occurs. However, sometimes an unhandled exception occurs when a computer program or application does not properly handle exceptions. This error can occur if the .NET Framework is damaged or if there are some corrupt files or malware on your system. When this happens, you'll see a Microsoft .NET Framework window pop up on your PC screen, alerting you that an Unhandled error has occurred in your application. This window will keep appearing even after you close it until you've fixed the error. You can go to the Microsoft support page to get this resolved.