Client unauthorized on custom firefox sync server after successfully authorizing on firefox account server

Ryan Kelly rfkelly at
Mon Jan 21 22:21:04 UTC 2019

It looks like your sync tokenserver is rejecting the identity assertion
produces by Firefox Accounts.  This is usually due to a configuration
mis-match of some kind, e.g. the server thinking its public_url is
different to what the browser thinks it is.

Please post your syncserver.ini config file (with secrets removed/redacted)
and I'll be happy to take a look for any obvious sources of such a

You may also have some luck with the gross-but-effective technique of
adding a bunch of `print` statements into this function in your local

Which will be able to tell you more information about what specific error
is occurring while checking the identity assertion.



On Fri, 18 Jan 2019 at 20:02, Jörg Müller <joerg.mueller7744 at>

> Thanks for pointing out, the file seems to have been removed. Here is a
> pastebin link:
> Jörg
> Am 18.01.2019 um 07:20 schrieb Mark Hammond:
> > On 18/01/2019 9:41 am, Jörg Müller wrote:
> >> This is the log of the firefox client:
> >>
> > There doesn't appear to be a log at that URL.
> >
> > Mark
> _______________________________________________
> Sync-dev mailing list
> Sync-dev at
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <>

More information about the Sync-dev mailing list