From Guild Wars Wiki
Update - Wednesday, August 9, 2017
- Performed server maintenance.
Guild Wars Wiki notes
- This server maintenance was in response to the Frankfurt Data Center power failure on Tuesday August 8, 2017. The update temporarily removed all access to the offline European servers from the game and forced players previously connected to the European servers onto the American servers.
- The European servers returned on October 6, 2017, for PvE only.