all slug are gone

After upgrading to 4.7 the site don’t have any slug, so only the static front page appears, hover on the links still display the slug but cannot navigate
Internet Information Services 7.5
Error Summary
HTTP Error 404.0 – Not Found
The resource you are looking for has been removed, had its name changed, or is temporarily unavailable.

Creating a new post, entering the title, dashboard doesn’t display https://www.mysite.com/slug as usual. It’s gone totally.

Updated to 4.7.1 still don’t fix, comeback to 4.6.1 still the same.

Help me out.

Thank you