AddType in htaccess causes page to download

Question

I have read about 10 questions like this, but there seems to be no answer to this simple question.

What could cause .htm files to be downloading instead of executed

Answer 1

Use AddHandler also, change htm to .htm and add .html

AddHandler application/x-httpd-php .htm .html
AddType application/x-httpd-php .htm .html

http://www.suffix.be/blog/addhandler-addtype-directives