We have a Windows 2011 SBS server. We never used the Exchange built in but it appears that our Outlook 2013 on the Windows 7 desktops have an ost file setup and the old external pop3 email we used with a small ISP for email.
We are switching to Office 365 shared Exchange and getting rid of the pop3 email. We have setup the users in Office 365 admin portal. Have exported the Outlook pst files on the individual users Outlook 2013 desktops. We uninstalled Office 2013 from the desktop. Downloaded and installed Office 2016 from the Microsoft Office 365 portal. when starting Outlook 2016 on the desktop it tries to connect to the ost file we never used on SBS server and also the old pop3 email. Do we need to delete the user's Outlook Profile and create a new one? How do we do that and will it cause a problem with the users internal network login? Will Windows SBS server try to force internal use of the Exchange built into it?
Do we need to actual remove the user from active directory in the Windows SBS console or can we just delete the Outlook profile As I understand it things need to be done in the SBS console or it may affect the whole server and network