We're running Exchange 2010, SP2.
We have a user running Outlook 2010 (like all our staff) who is prompted for a username and password on a very regular basis when using Outlook. It doesn't matter whether they enter this information or not, it doesn't actually stop them being able to send or recieve new emails, but it is incrediably annoying being prompted all the time for said info.
We had similar behaviour in Outlook 2007 and for the most part the upgrade to 2010 solved the issue, expect for this user who is a new starter.
Now, I've looked on Edugeek and the interwebs in general and despite there being simply hundreds of potential solutions, none seem to have any effect.
Hoping someone might be able to help me out!