www programming

The user integration is working, but the iframe is pulling in the WordPress home page instead of the phpBB home page. You can see what it's doing at http://dev.apoe4.info/wp/forums. (Browser authentication user is "axew3", and password is "phpbb3iframe".)

We're running phpBB 3.1.10 and WordPress 4.6.1 with the Avada 5.0.2 theme. The webserver root (http://dev.apoe4.info) redirects to http://dev.apoe4.info/wp, which is the WordPress root. The phpBB root is http://dev.apoe4.info/forums.

Any ideas?

Off the cuff, it sounds like your configuration is wrong, in Wordpress->Settings->WP w3all, the top 2 settings should be to your phpbb3 installation. I've accidentially set the 2nd option to either a page that doesn't exist, or to the page it's referencing before, and it's caused that same behavior. Checking the source on your iframe, it looks like you have it set to http://dev.apoe4.info if you change that to http://dev.apoe4.info/forums it should work.

Thanks, that was it!

No problem, glad you got it up and running.