Error [QuicEngine::onNewConn] Abort connection, access denied.

[ffeingol]

Hello,

We're seeing the message: 2026-02-26 18:08:21.867718 [INFO] [1716993] [T0] [##.##.##.##] [QuicEngine:nNewConn] Abort connection, access denied. on one of our servers in the error_log. What causes this and how do we clear the IP block?

Thanks!

 

[serpent_driver]

.... Abort connection, access denied.... What causes this and how do we clear the IP block?

You answer the question yourself. If access is denied then something blocks port 443 or port is not open.

 

[ffeingol]

The IP was not blocked at a firewall, .htaccess etc. It was very odd, but cleared overnight.

 

[serpent_driver]

Not IP, but port. Quic needs port 443 to be open!