When installing an application in Windows, you might get “Error 1324 The Folder Path Contains an Invalid Character“. This is usually caused by an invalid character in the User Profile. Microsoft has a suggestion that says to remove the invalid character from the registry if you’re aware of what the invalid character is. It worked for me windows 8 64 bit os. go to my pc>,>,advance system settings>,>, set environment path where ever you find temp edit the path and remove everything like %USERPROFILE%AppDataLocalTemp, from path TEMP. My name is Mitch Bartlett. I’ve been working in technology for over 20 years in a wide range of tech jobs from Tech Support to Software Testing. I started this site as a technical guide for myself and it has grown into what I hope is a useful reference for all. Source.