Question
Does Plesk support HTTP/3 (QUIC) protocol?
Answer
HTTP/3 support is now available on Linux, starting with Plesk Obsidian 18.0.61. Support on Windows Server is not yet available.
Note: The QUIC and HTTP/3 support in nginx is still experimental, please be careful enabling and using it.
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Since Apache doesn't support HTTP/3 yet, it is available for nginx or Apache + nginx proxy.
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Servers that upgrade to this version will need to enable it manually by running this command:
# plesk bin http3_pref --enable -nginx
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This protocol uses UDP, so it should be allowed in the firewall rules.
For more details and other limitations, see our documentation.