Hi, in windows 10, while I am launching Firefox - '''if it does not exist yet '''- a '''new read-only file''' is created on the Desktop. This file was created time ago by myself (so its name does not matter much and it contains only a small empty branch). I can't delete it as far as I don't have the rights to do it. I tryied used cmd console and powershell to fix it, but nothing works fine. I run my antivirus, no more result. Tried to trash this file using external programs, same issue. Tryied to change the rights of that file, to reinstall completly FF, nothing seems to be useful. ''Possible way to solve it '': I clean up my C: last week because I wanted more space and a better organization (moment from which that problem began). It is like Firefox was needing a file in the Windows tree and as he couldn't find it, he creates it because he need that this file exists. Regards