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Editorial Team
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Asked: 2026-05-27T08:46:41+00:00

Following a server move last week I have found that all the Facebook iframe

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Following a server move last week I have found that all the Facebook iframe apps I host are being redirect to http://www.facebook.com/4oh4.php

This is a straight redirection from the apps.facebook.com URL to the facebook 404 page – using httpFox. I can’t see any request going to my server at all.

The funny thing is everything works fine when I’m using the app admin account on my PC.

I’ve check and the apps aren’t in sandbox mode. It must be something to do with the server move. This was just a DNS update I didn’t need to change any of the app settings.

Has anyone else seen anything like this before?

Thanks for the assistance.

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1 Answer

  1. Editorial Team

    This is usually an indication that your app is in “Sandbox”/dev mode. You need to take it out of Sandbox:

    1. Go to https://developers.facebook.com/apps
    2. Select your app and click “Edit Settings”
    3. On the left hand side menu, under Settings, click “Advanced”
    4. Under Sandbox mode, click “Disabled”
    5. Scroll to the bottom and click “Save changes”.
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