wow51900118 is an issue that you might encounter on your journeys in WoW, so let's take a look at some solutions.
Thankfully, wow51900118 error in WoW is pretty standard, and you've done nothing wrong. There's no need to panic, however, as this error is perfectly normal, and not (probably) your fault. So, let's take a look.
Why am I getting WoW Error wow51900118
Simply put, the game is in maintenance. Maintenance happens once a week across all servers. For NA it's Tuesday, while EU is on Wednesday. Normally, this happens at a specific set time, however, Blizzard does sometimes start early, or over extend.
Alternatively, Blizzard might have dropped an emergency maintenance, in which case, the box on the left side of your screen should tell you everything. Failing that, head to the Blizzard Community Supprt Twitter accounts for NA and EU.
Another place to look is the official World of Warcraft Server Status page. Here, you can see the current status of all serverss, which should tell you that your one is under matinance, hence why you're getting the above code. However, if it doesn't, you'll need to look deeper.
The last real option is to look to the official r/wow Reddit to see if anyone else is having the same issue as you. Finally, you might need to contact the Blizzard in-game support for WoW (which you can do without being in the game). But, as we said, the error is specifically for server maintinance, so, give it some time and everythign should go back to how it was before.
How to fix World of Warcraft Error wow51900118
Patience is the only solution. Like we said, you've done nothing wrong, the game is just down for either weekly maintenance or emergency maintenance. Check the Community Support pages above for more details. Though, if you want to be sure, check your own connection just to be on the safe side.
wow51900118 Why is it happening
The likely answer is simply the weekly maintinance. Though, large patches, especially major seasonal patches can cause their own extended maintinance or problems. As we mentioned above, this error will most likely happen as a result of the weekly maintinance. Though, it can happen under special surcomstances, such as a major error or Blizzard apply an emergency hotfix to the game. These are, however, very rare, so, now that you've read this article, maybe take another look and see if the problem has been solved.