service · inferred from evidence
ADFS
Active Directory Federation Services, mentioned as an OAuth provider in the login failure context.
- Grafana 10 upgrade: OAuth login fails with "user already exists"
In Grafana Cloud: This is the documented Grafana v10 breaking change: OAuth integrations no longer look users up by email, which is how your 9.x users were matched. Existing accounts cant be found by email anymore, so the signup path fails