How to fix steam error “steam error code 105”.“Unable to connect to the server. The server may be offline or you may not be connected to the internet”.
The solution will try to fix the error 1603 "Fatal Error During Installation”. A general code that shows there is a problem with your Windows installation.
When traditional means of activating Windows aren’t working, you can use the slmgr activate and slmgr rearm command. Using this command you will activate Windows with the Command Prompt.