How to remove a write protected file

[Guest]

Hello,
how can i remove a write protected file?

 

[hang-the-9]

First make sure that the file is not a needed system file.

Right-click and uncheck any "Read-only" options. If the file is in use, you may need to boot in Safe Mode, or use a 3rd party software like http://ccollomb.free.fr/unlocker/