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Support / SUP-671

Brakeline: Hull rehearsal fails, 'signature is invalid'

Project
Support
Type
Support request
Status
Done Done
Priority
High
Organization
Brakeline
Reporter
Priya Nair <priya.nair@brakeline.example>
Assignee
Ana Ruiz <ana.ruiz@acme-hq.example>
Labels
brakelinesingle-sign-onrollout
Components
identity-service
Created
12 Mar 2026, 08:40 UTC
Updated
12 Mar 2026, 15:10 UTC
Resolved
12 Mar 2026, 15:10 UTC

Description

Rehearsal for Saturday: Doncaster, Sheffield, Grimsby and Immingham test accounts get in. Hull's test account gets past Microsoft and then your page says:

The sign-in response signature is invalid.

Same app settings as the others as far as I can see.

Linked issues

Comments (5)

Ana Ruiz · 12 Mar 2026, 08:55 UTC

Thanks Priya, looking now with Marek.

Marek Nowak · 12 Mar 2026, 10:30 UTCInternal note

My mistake: Hull's depot config has Grimsby's certificate. Both files came through as FederationMetadata.xml and I loaded them in the wrong order. Reloaded Hull from its own file; Grimsby checked, it's right. ENG-1348: show each config's certificate fingerprint and warn when one is reused.

Ana Ruiz · 12 Mar 2026, 10:45 UTC

Found it, and it was us: we loaded Grimsby's certificate for Hull, because both metadata files had the same name. Hull has its own now. Could your test account try again?

Priya Nair · 12 Mar 2026, 14:50 UTC

Hull test account gets in. All five done.

Ana Ruiz · 12 Mar 2026, 15:10 UTC

Confirmed on our side. Closing; from now on we ask for one test account per depot, which is what caught this.