Scenario
One OAuth callback still fails after moving to a new subdomain.
A login page is correct and one callback still fails because the redirect URL list keeps the old subdomain
The app is healthy, but one redirect allowlist still uses the earlier subdomain.
What to check first
- Identify the primary failure signal in the IAM scenario.
- Separate visible symptoms from the underlying technical dependency.
- Describe the safest recovery path and the follow-up prevention work.
Checking checklist
- Summarize the current impact and the last known change.
- Collect direct evidence from logs, runtime state, and configuration before changing anything.
- Separate immediate recovery from permanent prevention work.
Recovery and prevention
Check redirect allowlists before rotating client secrets.
Questions worth viewing together
No. Keep commands, logs, file names, APIs, and product names unchanged, then explain the reasoning in the selected UI language.
State the root cause, the evidence that supports it, and the safest recovery direction.
The source scenario is treated as an incident artifact. Guidance, checklist, hints, and explanations can be localized around it.
Similar cases seen in the field