Unable to connect to servers

Over the last few days I have been getting an error message saying “There was an isue wit the Halo 5: Guardians servers. Please try again.” whenever I try to launch any of the multilayer lobbies. Has anyone else had this problem? Connections have worked almost perfectly for me until now and Xbox Live is having no issues either.

XBL has been attacked a few times lately and caused some issues for some people. I havent been able to play too much lately but maybe that could be your problem?