Hello,
Outlook Anywhere has been working in our environment internally for a few years now, however over the past few months I have been noticing that if I close Outlook and restart it, Outlook with continually prompt for my password and not accept it.
I have found that the cause is that the Proxy authentication settings is being changed from basic (which works) to NTLM which will not work. Changing the setting back to basic will allow the user to log in, but the setting will change back to NTLM shortly afterwards and the user will not be able to log back in if they close Outlook and restart it.
This is happening both internally and externally, but it's also happening on users' home machines that are not even domain members. We are not using the 2010 Exchange gpo and I'm not aware of any way that settings can be changed on a client that is not even a domain member! What could be causing this setting to change??
Thanks.
