https://community.checkpoint.com/t5/Spark-Firewall-SMB/Application-Control-HTTP-parsing-error-occurred/m-p/276611#M13940 <P>I may have posted about this previously on a thread but wanted to see if anyone else is having this show up in their logs for all QUIC traffic. Checkpoint is supposed to be able to parse QUIC but we get nothing but parsing errors. The default action is to block the connection but we are getting complaints that some services get disrupted such as Teams, Outlook, etc</P><DIV class=""><DIV class=""><DIV class="">Application Control - HTTP parsing error occurred</DIV></DIV></DIV><DIV class=""><DIV class="">&nbsp;</DIV></DIV> Wed, 06 May 2026 20:45:19 GMT sx8n20394 2026-05-06T20:45:19Z https://community.checkpoint.com/t5/Spark-Firewall-SMB/Application-Control-HTTP-parsing-error-occurred/m-p/276611#M13940 <P>I may have posted about this previously on a thread but wanted to see if anyone else is having this show up in their logs for all QUIC traffic. Checkpoint is supposed to be able to parse QUIC but we get nothing but parsing errors. The default action is to block the connection but we are getting complaints that some services get disrupted such as Teams, Outlook, etc</P><DIV class=""><DIV class=""><DIV class="">Application Control - HTTP parsing error occurred</DIV></DIV></DIV><DIV class=""><DIV class="">&nbsp;</DIV></DIV> Wed, 06 May 2026 20:45:19 GMT https://community.checkpoint.com/t5/Spark-Firewall-SMB/Application-Control-HTTP-parsing-error-occurred/m-p/276611#M13940 sx8n20394 2026-05-06T20:45:19Z https://community.checkpoint.com/t5/Spark-Firewall-SMB/Application-Control-HTTP-parsing-error-occurred/m-p/276618#M13941 <P>Concerning QUIC - HTTP/3 inspection specifically?</P> <P>With chromium preventing custom CAs for QUIC as of recently I suspect it can no longer be done reliably since Edge /&nbsp;Chrome are the most prevalent browsers in enterprises.<BR /><BR />Refer also:&nbsp;<A style="font-family: inherit; background-color: #ffffff;" href="https://support.checkpoint.com/results/sk/sk111754" target="_blank">https://support.checkpoint.com/results/sk/sk111754</A><SPAN>&nbsp;</SPAN></P> <P>&nbsp;</P> Thu, 07 May 2026 08:15:30 GMT https://community.checkpoint.com/t5/Spark-Firewall-SMB/Application-Control-HTTP-parsing-error-occurred/m-p/276618#M13941 Chris_Atkinson 2026-05-07T08:15:30Z