Log In to MusicBrainz no longer works

[arsinclair]

After completing the OAuth flow on MB and being redirected back to magicisrc, it does't display the logged in user.

The problem is exacerbated with auto-login extensions, such as chaban's MusicBrainz: Auto login MusicBrainz ISRC importers. If this extension is installed, it goes into an endless loop.

2026-05-17.11-54-26.mp4

[karpuzikov]

The same problem

[Salem874]

Working here

[arsinclair]

It started working again a couple of days down the line.

[dragonzeron]

No longer working as of august 19th 2026

[arsinclair]

Hmm, weird. Mine recovered and never went back to this state. Possibly cookie corruption?

Maybe try in incognito mode?

Spoke too soon. It stopped working today actually.

[kepstin]

For people who are hitting this issue:

• Are you currently logged in or logged out on https://musicbrainz.org/ ?
• Do you see the same problem if you use https://magicisrc-beta.kepstin.ca/ which has a slightly different login flow, and uses https://beta.musicbrainz.org/ instead?

My suspicion right now is that there isn't anything wrong with magicisrc itself (other than poor handling of error cases), and that the actual problem is that the musicbrainz servers are overloaded and are not responding when magicisrc attempts to complete the oauth login sequence.

I'd also appreciate a copy of the web inspector console logs from someone who hit this issue.

[arsinclair]

I will send logs when I encounter it again, but today actually the problem is no longer reproduced for me.

I'm using both musicbrainz.org and beta.musicbrainz.org, logeed in on both (with Metabrainz Auth, as this is the only option now). I'm not using https://magicisrc-beta.kepstin.ca, and I didn't know about it.
Also to note, I'm using chaban's Auto-login script, which might somehow exacerbate the issue: https://update.greasyfork.org/scripts/536881/MusicBrainz%3A%20Auto%20login%20MusicBrainz%20ISRC%20importers.user.js