How do I delete QuickTime URL history?

You can either edit URLs listed in C:\windows\system\quicktime.qtp (the Quicktime Preferences file - open it with notepad ) or you can delete the entire file. In any event, you will have to do this every time you acces a URL you don't want others to see, because Quick time will update the QTP file with any URL you access. If the file doesn't exist (because you deleted it, for instance) Quicktime will create a new one when you exit the program. Also, if you delete the entire prefs file, the next time Quicktime runs, it will ask you for your internet connection speed. It will then store your connection speed in the prefs file.