If the game starts in a tiny window, go to System > Video in-game and check the "Windowed Mode" or "Maximized" boxes.
The original 1.12.1 interface is quite primitive. To improve your experience, look for these "Vanilla" versions of popular addons:
You can run it directly from a USB drive or any folder. WoW Vanilla Client 1.12.1 Portable Download Pc
Do use a launcher if one is included. Simply double-click WoW.exe . Log in using the account credentials you created on your chosen private server's website (not your modern Battle.net email). Essential Addons for 1.12.1
To play on a specific server, the game needs to know where to "look" when you log in. Open the WoW folder. Find the file named realmlist.wtf . Right-click it and . If the game starts in a tiny window,
Most major "Classic" private servers host a clean, virus-free download of the 1.12.1 client on their "Getting Started" pages.
Below is a comprehensive guide on what a portable client is, where to find one, and how to set it up for private server play. What is a "Portable" WoW Client? Do use a launcher if one is included
Adds quest icons to your map (essential for those who don't want to read every quest log).
If your settings won't save, right-click your WoW folder, go to Properties , and uncheck Read-only .