Autodiscover has been setup for years and working fine. I had to rebuild one of the Exchange 2010 mailservers last week, but it's been functioning correctly since then. Rebooted last night after updates - all OS updates (Windows 2008 R2) server. Pretty sure I installed Roll Up 8v2 last week but ECM is showing Exchange 2010 SP3 (126.96.36.199)
Outlook users are working and connected to exchange, but get a password popup on startup and about once an hour, apparently when Outlook is checking the autodiscover. Outlook stays connected to Exchange the whole time and sends and receives even if you just cancel the password prompt close this box, so I'm pretty sure it's just trying to check in with the autodiscover. The only credentials that do work are the administrator account.
Also, when I connect to https://myexchangeserver/autodiscover/autodiscover.xml
, the only credentials that work are the administrator credentials. I've verified that I can log in using normal user credentials on other exchange servers.
Have gone through and checked all the filesystem, IIS and authentication settings and permissions and everything looks good. Does anybody have any idea what to check next?