Fix for Character not found, straight from BlizzardCS Twitter feed

WoW Classic WoW Classic General Discussion
1
  1. Open cmd.exe as admin
  2. ipconfig /release
  3. ipconfig /renew
  4. ipconfig /flushdns
  5. Login and play!

Worked for me on Whitemane. No delay whatsoever… Maybe flushing the DNS gets a new route to the host, bypassing DDOS attacked ISP(s)? Who knows… Now, back to leveling!