Error 7

Err no 7 is an error message that is displayed by the game at times. It comes after the player has been disconnected from the game. According to Gaile Gray it describes a connectivity error somewhere between the Guild Wars server and the player's end, which usually would mean some kind of hiccup at the player's internet service provider. ANet has no influence on this and is not (and never will be) able to fix this issue.

Err no. 7 is lethal and there is no way to recover from it and rejoin a party. Often when a player has been disconnected and reconnects, they will privately message one of their former party members with the message: "Sorry, errno7"

Note: Some players may simply be using that as an excuse.