We have been running Exchange 2013 for around 10 months now. We upgraded 2013 to CU7 in January, for the last 2 months it has been the only Exchange environment we have, before then we had in coexistence with Exchange 2007.
Over the last week or so a number of users have reported random auto discover pop ups. All users saw this when they first moved to 2013, and it is seen again if they log into a new machine or need to rebuild their mail profile, however, the people reporting this are using machines they have had for a while and no changes have been made to their profiles.
The pop up says it needs to reconfigure an xml file (the path is specific to their profile).
Why do these pop ups appear and what can I do to stop them?