I tried searching for a solution but didn’t find anything. Using version 111.0-3, I try to connect to google sites (docs, search, drive) and LW says that the site isn’t secure. I tried diabling HTTPS-only temporarily, and it still didn’t work.
It seems like if I turn on ExpressVPN, I can’t connect. If I disconnect ExpressVPN, the connection goes through. I tried the filter in ExpressVPN to let connections through when LibreWolf tries, but that doesn’t seem to work either.
Has anyone ever experienced this? If so, what was your solution to fix it? I’m on WIndows 10.
Seems to me that something is playing man-in-the-middle.
If a fake certificate or malformed certificate chain is presented, the connection will show as insecure if the browser is configured with certificate pinning enforcement.
It’s worth checking not only your VPN client but your antivirus if you’re on a system that runs one.
You can download a good free VPN such as ProtonVPN and try connecting via that to confirm (or otherwise) that something is intercepting your https connections.
Look up the settings for security.cert_pinning.enforcement_level in about:config.
You should find it set to “2” - Strict Mode.
You can set it to “1” (or 0) as a test. You can google the settings for this.
Thanks for the response. Sorry for the late reply. After investigating with my hosting provider, it seems the problem was one of my email accounts that was constantly trying to connect to the IMAP server with the wrong password. So I was being throttled for a while. I fixed that and the problem seems to have gone away. I’ll keep monitoring.
