Trolling with Unable to update patch files

[Tusembobel]

I will reply to myself - maybe it will help those who get same error. I don't really know if THIS very solution helped, but I think it was this one.
First of all I tried to uncheck the "Read only" checkbox on game folder, thinking somehow system won't allow launcher to update files. System said - go home son, althou you are an admin of this system, I wouldn't allow you do that:



Ok, I said, and gave all users full access to the game folder:



It helped. Hope it will be useful if someone happens to have such case.
P.S. Forgive me my russian punctuation with commas..