I’ve got a couple reasons already, but my number one reason, and I’m glad I finally figured it out is…
#1 - You created an MSsql database by mistake! - arggghh , Oh No!!
The little teenie control panel icons at my web host weren’t big enough for me to figure out, hey it’s not MYsql.
Add your own?
I know I know, I’m the only one who’s ever failed at an EE install right? 😊