R81.20 "HTTP parsing error occurred" / body filter failed in response

[Romaryo]

Hello everyone!
We’ve encountered the following phenomenon: many websites don’t fully load when opened (for example, Reddit, GitHub, etc.). In the logs, we see the following events (see attached screenshots). At the same time, we notice HTTP parser errors, and despite the fact that we have the Allow Fail-Open mode enabled and the traffic is allowed, the sites still don’t work. In the browser’s debug console, we can see that connections for fetching *.js files are being reset.
Does anyone have any ideas about this?
Thanks in advance!

[PhoneBoy]

Are there explicit HTTPS Inspection logs confirming that HTTPS Inspection IS happening over VPN?

[Romaryo]

Yes.

[PhoneBoy]

You can, however, explicitly block QUIC at the firewall (UDP/443).
This should cause the browser to go back to HTTP/1.1 on its own.

[Romaryo]

Unfortunately not. We explicitly block "Quic," and it has no positive effect. Only explicitly disabling HTTP/2 in the browser has a positive effect.

best regards,

Roman

[Romaryo · Accepted solution]

Hello everyone! Thank you very much for your support! The problem is solved. The SK116022 has become the solution!

best regards,

Roman

[_Val_]

thanks for sharing