• This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn more.

What is crossdomain.xml and what should be in it?

The cPanel error log shows a recurring issue that the file crossdomain.xml does not exist. xenForo is installed in a directory off the site root called /forum, and accessed via a subdomain (forum.domain.com). It seems like I need a file called crossdomain.xml in the forum directory. What would that file consist of?


XenForo moderator
Staff member
crossdomain.xml is not a xenforo file.

Im guessing some bot is crawling your site for APIs/exploitable files and that is one it is looking for.