400 Bad Request with Google AdSense

Question

I am running a website that uses AJAX requests and history.pushState for navigation.

The requested content code contains Google\'s asynchronus AdSense code:

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Answer 1

I had the same problem, and after some research, I've seen it's a problem of incompatibility between Google Adsens and AJAX sites.

See Google's announcement and these two threads in Google's forums.

I've tried to artifically mangle the prev_fmts parameter, but I couldn't find my way through the obfuscated JS. Anyway, I guess that doing this would go against Google Adsense TOS.