I got that problem as well several times during the day and several things worked to get back on the game again. You should try this before start removing addons, or re-installing etc.
When starting the battle.net and then world of Warcraft, do not click on other stuff until you are logged in proper!
- Run the battle.net as Administrator.
If it doesn’t work - Restart your comp and then battle.net. Then start worldofwarcraft
This worked for me, but may not work for you. But, I really hope it does so we can enjoy this awesome game!
Other posts
- +63 Key for 740 ilvl Reward in Legion Remix Mythic+
- The Ultimate Legion Remix Gearing Guide: How to Max Out Your Item Level Fast
- What comes out in Midnight - World of Warcraft
- Legion Remix: Everything You Need to Know About WoW’s Fast, Fun, and Fel-Filled Seasonal Event
- Week 1 Coffer Keys Guide for Patch 11.2
- War Within Season 3 Pinnacle Cache Guide: Massive Reputation Gains in Patch 11.2
- Gear update week 1: Get 2 Veteran pieces 668+ ilvl
- All lore objectives in 11.2 Karesh
- Timers (spawn time) on Objectives (Invasions)
- All side quests in 11.2
