Sometimes you might get this error when ever you are starting the game. So you might get this problem in some resolutions, but the good news is that you can still start the game. You need to start Notepad as Administrator, so you need administrator rights to edit those files. If Notepad says that you cannot save the file. Navigate to Red Alert 2 installation directory and you should see there RA2. The game will create the needed INI files when you have visited the game. So just go to Skirmish and start any map and exit the game. If you have ultrawide monitor and you try to use ultrawide resolutions, it is possible that you will have problems.
You cannot change HUD size separately, and it always resizes with resolution. The bigger resolution you are using, the smaller in game HUD you will have. CnCNet launcher will launch automatically after installation and it is really loud. Even this article talks about Origin version of the games, this also works on CD version or with original untouched images of the game.
