Thread:Project:Support desk/can't find CSS after upgrade from 1.15 to 1.20/reply (5)

You could add the contents of .htaccess to the Apache conf file. That would give faster results. However, it is not needed. MediaWiki does not need any settings, which you could not do in .htaccess as well. I would add it to .htaccess.

What you need in the .htaccess file depends on whether you use short URLs or not. See Short URLs for possible contents.