Hi all,

Once upon a time 2 Mac running OSX Mavericks in a Windows network. Both of them are configured with an Exchange 2010 SP3 account under Outlook for Mac 2011.

One of these 2 Mac does not encounter any issue with Outlook.

The other randomly and frequently prompts Kerberos credentials at Outlook's startup. The only work around : reboot the Mac one or several times... In fact, we have to reboot it because when this issue occurs, even if the credentials are correct, Outlook refuses to connect to Exchange.

The Exchange account flawlessly runs with Outlook 2010 under Windows 7, and equally via OWA. I've already deleted the configuration of Outlook for Mac and recreated this account, but without success.

I've seen this post : http://social.technet.microsoft.com/Forums/exchange/en-US/13893a48-80d3-43e1-ab39-02a99c19f993/outlook-2011-for-mac-prompts-for-exchange-password-and-then-fails-to-sync-even-though-outlook?forum=exchange2010, but I don't think this solution is necessary and relevant in my case.

Would you have an idea about this ?

Thanks. Have a good day.