Windows 2008 R2 IIS 7.5
MediaWiki 1.32.0-RC0 (11-09-2018)
I had tried 1.31.1 but from reading found it doesn't support MS-SQL at all because of issues with it and it was being fixed in 1.32.0 release. Looking in GIT I saw most of those issues resolved. When I first try to install there's an error on table creation, it looks like a comma was left out of the tables.sql file.
maintenance\mssql\tables.sql line 1044
rc_patrolled tinyint NOT NULL CONSTRAINT DF_rc_patrolled DEFAULT 0
I added the comma to the end in that file and started the entire process over after deleting and remaking a blank DB and it ran through successfully then.