Hello all, this is my first post and nightmare to this issue because i believe i made mistake and overlook something. I search over the internet i cant find the best answer or maybe i missed something during the configurations. The exchange was working fine not after i change the setting following the method Configure External and Internal URL in Exchange 2012. after that, the users outlook experiencing disconnect from exchange. I restore back the previous setting but now I cant add any new user to the any Outlook version or change the server path. it will cause the problem which show the message below:
"Can't open your default e-mail folders. You must connect to Microsoft Exchange with the current profile before you can synchronize your folder with your offline folders with your Outlook data file (.ost)"
I restarted the server and check all the Exchange services are running. The Outlook web is running and they able to receive and send out. The existing link to the exchange are still working so I not really sure what setting should i look into. I was thinking about restoring back from Window Server Backup but was advise not to do it unless there are ways to look back the previous setting from the backup.
One of my ex-boss told me could be the Exchange Certificate but wasn't sure.
I really appreciate someone could advice and help me resolved this issue.
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