Hi All, Previously we are happy and got no problem with the Pop up message in random times with Autodiscover until this week that few random people got it. The reason I put Autodiscover is to simplify things but it doesn't work as it should. I had enough problem with the Exchange Autodiscover issue and now I have decided to roll back the changes in my internal and external DNS, I didn't make any changes in the IIS server at all and just wondering what else that I should need to know to roll back the changes ? Thanks, A/* Server Support Specialist */

As I know, IIS and DNS is the two places to check You can also check the configuration in the output of the “Get-AutodiscoverVirtualDirectory” cmdlet Please also check the answer in this thread Please run an outlook profile repair so that AutoDiscover configuration will be required again Resource: Default settings for Exchange-related virtual directories in Exchange Server 2007 James Luo TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.