Cannot log in to any browser extension (solved)

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So today, I was logged out of both Firefox and Edge Bitwarden extension(s). When I try to log in, I instantly get an “unknown error”. I uninstalled and reinstalled the extensions to no avail. I am able to log in to the website just fine. Does anyone else have any ideas?

Edit: So it looks like I am receiving a 403 forbidden error. The extension is trying to go to https://identity.bitwarden.com/connect/token and when I manually go there, I get

Sorry, you have been blocked

You are unable to access bitwarden.com

Looks like Cloudflare has blocked my IPV6 address for some reason. Ugh.

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Contact support and see if they can whitelist your IP in case it’s a false positive.

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Well, turns out it was self inflicted and despite the embarrassment, I’ll admit my mistake here.

Earlier in the day, I was using “Fiddler” to test a different app on the side for malicious behavior. Anyway, I forgot to stop the interception/decoding and I’m guessing the BitWarden extension(s) and/or CloudFlare is able to detect the forged certificate and say “hell no” (good on them!). The online vault was working fine. Either way, when I remembered to turn it off, everything started working again.

Thanks everyone for your help. If you run into this error, see if there are any interception proxies/check the certificate serial etc from different machines/connections to see if it’s being tampered with. I’m not entirely sure this was the mechanism of detection, but it cleared up immediately upon closing Fiddler.

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No worries at all. ALL learning is good; you never know who else may need to see this so we appreciate the question AND solution!