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What Quic versions does LSWS support?
Supported versions should show automatically as far as "QUIC versions" set to blank
Initially, LSWS supports Q035, Q037. Now the latest version of LSWS supports Q035, Q037, Q038, Q039, but the supported versions should keep changing from both Chrome side and LSWS side.
LSWS will automatically show the supported versions through the headers. In LSWS QUIC setting “QUIC versions”, you should not manually set any versions there and leave as Blank always.
then the header should show all latest supported version automatically:
Troubleshooting: Why my supported QUIC versions' header wrong?
Sometimes you can not see the latest supported version from QUIC header even LSWS's new release supports them. For example, at the time of this writing, LSWS supports Q035, Q037, Q038, Q039, but page header only show “35, 37”. Why?
One possible reason is that you are using an old version of LSWS. You should always upgrade to the latest build of the latest version.
If you have upgraded to the latest version so but still saw the above error, most likely you manually set “QUIC versions” in LSWS settings.
You should already leave “QUIC versions” to blank, otherwise manual configuration will soon become outdated/wrong configuration.