Microsoft Outlook not opening profiles is an increasing issue these days as Outlook contains all the information about the user like calendars, emails, and other essential things. It can be a threat for the users who use Outlook regularly. When Outlook does not open the profile, you may observe that the Outlook stucks or freezes for a while. So this, the issue has to be resolved quickly. This blog carries the troubleshooting steps to fix the Outlook doesn't open an issue and also provides the reasons. 

Reference- https://www.cheddrbox.com/read-blog/53714