We are presently experiencing instance issues on the following realms:

Andorhal
Anetheron
Archimonde
Black Dragonflight
Dalaran
Dalvengyr
Dentarg
Duskwood
Executus
Haomarush
Khadgar
Mal'Ganis
Norgannon
Scilla
Steamwheedle Cartel
Thrall
Turalyon
Ysera
Ysondre
Zuluhed

We are currently investigating the cause of the instance issues. Thank you for your continued patience.

We are no longer seeing instance issues on the aforementioned realms. Thanks again for your patience while we actively worked on resolving the matter. See you all in-game!