Navigate to your installation folder (usually StarCraft II\Support64\ ) and run SC2Switcher_64.exe . When the login screen appears, enter your username and click "Connect." When it fails, the "Play Offline" option will appear. 4. Technical Specifications for Offline Play
Until Microsoft proves otherwise, the will remain essential for a huge segment of the player base.
Once in offline mode, you can access specific parts of the game, provided they are already downloaded: Single-Player Campaigns
Only use a StarCraft 2 offline installer patched if you have a valid, paid license for the game (e.g., the Campaign Collection or the original Wings of Liberty + expansions). Do not distribute the patched files.