What are you playing on? (PC, Xbox, or PlayStation?)
Incomplete installations or files corrupted over time. Proven Fixes for UI Error 27393 in Black Ops 3 ui error 27393 black ops 3
Close Steam. Press Windows Key + R , type %localappdata% , and hit Enter. Locate the Activision or Black Ops 3 folder and delete the cache folder inside. 4. Verify Game Files (PC Only) What are you playing on
Let’s fix it.
If the number changes or a small loading bar appears, the game is pulling a live hotfix. Wait until this process finishes entirely before clicking into the Multiplayer or Zombies menus. If you want to narrow down the issue, please tell me: Press Windows Key + R , type %localappdata% , and hit Enter
Treyarch may never release another patch for Black Ops 3, but that does not mean you have to live with this error. Follow this guide, and you will be back to slaying zombies or dominating in Nuk3town within the hour.
If none of the steps above resolve UI Error 27393, your core game files are deeply corrupted. You will need to uninstall Call of Duty: Black Ops 3 completely, restart your device, and perform a fresh installation. Ensure that you let the game fully download and install all DLCs before launching it for the first time.