Since its release on August 26, World of Warcraft Classic has dominated Twitch and the gaming world. Plenty of top streamers have ditched the titles they play on a daily basis and jumped headfirst into Blizzard’s mega-popular MMO.
While it has, so far, been extremely successful, the online title has not been without it’s faults. Players have noted incredible wait times and randomly disconnecting - leading you right back into that insane queue to log in. Those random disconnects have reared their heads with a new issue - error code 51900101 - but there is a way to fix it.
If you run into WoW error 51900101, get disconnected and are left without a way to get back into your server of choice, do not panic.
The most successful way to rectify this is to delete your WoW Classic cache file. This file contains all your key binds and user interface choices so you’ll need to make a note of those before doing so as it may take some time to get everything back in order once you’ve fixed the problem.
Once you’ve got everything memorized, head to your World of Warcraft folder within your PC, find Classic, then locate Cache and delete it.
After you’ve done that, a fresh Cache folder will replace what you had before and should be the answer to your problem - just don’t forget to get everything back in place so your game is back to normal.
However, if that method doesn’t quite work for you, there could be a bigger problem with your internet service provider blocking access to the game.
If that might appear to be the case for you, turn off your firewall in security settings and try rebooting the game.
If that is the root of your problems and you manage to sort it, happy hunting in WoW Classic - provided you survive the long wait queues.
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