Diablo iii launcher stuck at updating setup files
Of course, do not remove security software if you can't reinstall it, and always restore disabled security after testing. Heavy Soldier, It sounds like something is preventing the launcher from installing the game files. Disabling or temporarily uninstalling firewall and anti-virus programs (Norton, Mc Afee, etc) can permit the launcher to run successfully.
We'll also include non-Blizzard sources when appropriate (but in general, Blizzard is pretty on top of all these).________________________________________________Rate me! If you download the latest installer and run it to reinstall over your existing installation, it may fix the problem.