Since last week we have issues with the sync between Outlook 2011 and Exchange 2010. When starting the application it works just fine and downloads the mails but after the download the users has to re-enter their logon credentials. Outlook will not accept the entered username and password and the user will not be able to send or receive mails.

But, if they change the password in the account settings instead it will work for a short while but after the mail box has been synced the logon dialog box appears again and the password is not accepted.

Most of the users are running on Mountain Lion and the 14.2.3 version of Outlook. Our Exchange server is Exchange 2010. The problem occured last monday, september 10th. No changes has been made in the Exchange server for the past two weeks.

Another thing, a user tried to reinstall Office and first uninstalled it. Now, when he tries to install Office for Mac 2011 on his Mountain Lion he receives the following message:

Microsoft Outlook can not be opened because of a problem. Contact the developer so that you are sure that Microsoft Outlook works with this version of OS X. You may need to reinstall the software. Be sure to install any available updates for the application and OS X.

/Jocke