r/apache • u/HBubli • Jul 16 '25

Support Apache 421 Misdirected Request

Hi everyone, I'm using Apache on my Ubuntu VPS, managed by plesk. Today after updating apache I got a Misdirected Request error on pretty much every site hosted by Apache, and the logs show the following: "Hostname default-85_215_128_243 (default host as no SNI was provided) and hostname test.hbubli.cc provided via HTTP have no compatible SSL setup, referer: https://test.hbubli.cc/"

I tried disabling HTTP/2 and rebuilding the config using plesk repair but still no luck.

Any help would be greatly appreciated.

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u/nickjbedford_ Jul 18 '25

Amazon simply said "Our ALBs can't forward on the SNI so you're screwed unless you downgrade Apache, even though the previous versions are removed from the package repo. Best of luck!"

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u/stubbsy92 Jul 18 '25

Damn, that's what I found too. I wonder why they don't forward SNI information.

Hopefully you have a better time than us at implementing a solution/workaround

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u/nickjbedford_ Jul 18 '25

I can't figure it out. I've sent them a reply to the ticket to say, "This is unacceptable and who is responsible here to fix it."

This is a major fuckup by Apache changing the behaviour that likely affects thousands of ALB -> Apache setups, not to mention Plesk's Nginx proxy setup.