Does anybody know, by any rare chance, what #Firefox settings might cause CORS errors? Since last week I'm unable to access, for example, a local #Jellyfin instance with Firefox due to this problem, as it causes a lot of CORS errors (same origin policy).
I have already tried changing "Enhanced Tracking Protection" settings: they are ignored.
I have also already tried creating a new fresh Firefox profile. It works, but as soon as I synchronise it with my Mozilla account, it fails again.
Joxean Koret (@matalaz)
npub1pn…vdf5d
2026-02-03 17:31:52 UTC
Author Public Key
npub1pnptp3wdsuqaxyrz5t4klz48rhhkzdsvwh0t3x2wv6xvrpq6hetq5vdf5dSeen on
wss://relay.momostr.pinkPublished at
2026-02-03 17:31:52 UTCEvent JSON
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"content": "Does anybody know, by any rare chance, what #Firefox settings might cause CORS errors? Since last week I'm unable to access, for example, a local #Jellyfin instance with Firefox due to this problem, as it causes a lot of CORS errors (same origin policy).\n\nI have already tried changing \"Enhanced Tracking Protection\" settings: they are ignored.\n\nI have also already tried creating a new fresh Firefox profile. It works, but as soon as I synchronise it with my Mozilla account, it fails again.",
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