Using Classic Outlook on Windows for personal email, calendar, and contact management
I had the same problem.
I got solution for me in below way.
- Open Internet Option by typing in search bar in taskbar.
- Select Local Intranet.
- click on sites
- click on advance
- Add the file server link or ip which you want to get open.
- Once added the IP click close apply ok.
- Now close outlook and open and try. hope this will solve your problem.