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This repository was archived by the owner on Feb 19, 2026. It is now read-only.
GET /.well-known/fxa-client-configuration HTTP/1.1" 404 #267
Visiting from web browser: https://mozillasyncserver.myserver.com/ gives "it works!" https://mozillasyncserver.myserver.com/.well-known/fxa-client-configuration gives "0"
However, clicking "Sign in to Sync" in Firefox, this line is shown in Nginx log: [21/Dec/2020:07:09:07 +0000] "GET /.well-known/fxa-client-configuration HTTP/1.1" 404 1 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:84.0) Gecko/20100101 Firefox/84.0"
It seems I can self-host syncserver and use Account Server hosted by Mozilla? How should I configure Firefox for th
Yes, this is also possible. What Firefox are you setting up? (Desktop, Android, iOS..?)
On Desktop, you should be able to make this work by leaving the identity.fxaccounts.autoconfig.uri preference at its default value, and instead just setting the identity.sync.tokenserver.uri preference as documented here.
Great! I see HTTP-200 in Ngninx logs. The server is correctly set-up except I have modified the incorrect config in Firefox. May I know how to modify the config for Android Firefox as well?
Activity
rfk commentedon Dec 21, 2020
This URL is served by the Firefox Account server; if you want to self-host the account server as well as syncserver it is unfortunately a much more complex process, ref https://moz-services-docs.readthedocs.io/en/latest/howtos/run-fxa.html
thematrixdev commentedon Dec 21, 2020
It seems I can self-host syncserver and use Account Server hosted by Mozilla? How should I configure Firefox for this?
rfk commentedon Dec 21, 2020
Yes, this is also possible. What Firefox are you setting up? (Desktop, Android, iOS..?)
On Desktop, you should be able to make this work by leaving the
identity.fxaccounts.autoconfig.uripreference at its default value, and instead just setting theidentity.sync.tokenserver.uripreference as documented here.thematrixdev commentedon Dec 21, 2020
Great! I see HTTP-200 in Ngninx logs. The server is correctly set-up except I have modified the incorrect config in Firefox. May I know how to modify the config for Android Firefox as well?
thematrixdev commentedon Dec 21, 2020
Btw is data in LockWise synced to this self-hosted server?