Thx for answering. I've tried this: 1 http://gravitypoint.se/windows-7-desktop-auto-arrange-solution/ With no succes, I coudn't find an clsid folder 2. 1. run CMD (admin) 2. stop windows explorer 3. go back to CMD and type cd %userprofile%\appdata\local\microsoft\windows\explorer del iconcache*.db /a explorer No succes 3. Scaning my computer for malwares by SpyHunter - nothing and ESET Smart Security 8 My latest windows update was Aktualizacja zabezpieczeń programu Internet Explorer Flash Player dla systemu Windows 10 x64 (KB3087040) Security Update for Internet Explorer Flash Player for Windows 10 x64 (KB3087040) 24-09-2015 -------------------- As I wrote I didn't install anything new. My latest instalation was an update from nVidia via GeForce Experience.