My brother has Windows XP with a large number of art programs that don't work in newer versions of Windows.
Last thrusday, he got a an art file from a colleague with a .rar extension. He downloaded WinZip to open it. It would not open the art file.
Now the computer does not recognize any file type. Double-clicking any icon on the desktop or in windows explorer (My Computer) opens a dialog box saying the computer was unable to recognize the file type. The only suggested programs the dialog box suggests are Windows Picture and Fax Viewer and Notepad.
The File Types part of Folder Options in windows explorer shows the correct path to the application. But actually going to that application on the C drive and double clicking it gives the same dialog box.
What caused this and how can it be reversed?