New AD user, replacing staff member, mail disabled old user, reconnected mailbox to new AD user.
New AD user can log into windows fine, but outlook on first and all subsequent openings throws this error.
Cannot Start Microsoft Outlook. Cannot Open the Outlook window. The set of folders cannot be opened. You must connect to Microsoft Exchange with the current profile before you can synchronize your folders with your Outlook data file (.ost).
If I remove cached mode it throws this error.
Cannot Start Microsoft Outlook. Cannot Open the Outlook window. The set of folders cannot be opened. Microsoft Exchange is not available. Either there are network problems or the Exchange server is down for maintenance.
This issue only occurs for this user with the reconnected mailbox.
This user can use OWA without any issues.
I made another new AD user and gave fresh mailbox, no issues on this same PC.
Exchange 2016 on premise, Outlook 2013, Windows 7 Pro.
Any help would be appreciated.