Remove index.php from url in permalinks over IIS server (web.config)

There was something installed on the IIS server that was capable to read the .htaccess files; and was ignoring the web.config so the WP documentation with .htaccess works for me.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)