Troubleshooting / symptôme

Conditional Access blocks an administrator

A conditional access policy prevents an admin account from logging in.

⌚ About 3 min read
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Real-world problem · V2

Quick troubleshooting view

Likely causes
  1. too wide
  2. MFA/device-commission
  3. rental
First checks
  1. Limit the impact.
  2. Collecting Evidence.
  3. Test the the simplest hypothesis.
Recommended actions
  1. Correct the confirmed cause rather than the symptom.
  2. Document the change and result.
  3. Establish supervision if the defect can recur.
Start Symptom → Cause →
Microsoft 365.Intermediate.

A conditional access policy prevents an admin account from logging in.

Important: relevez toujours le message d’erreur exact et l’heure du problème avant de modifier la configuration. Les actions proposées doivent être adaptées à votre environnement.

Causes probables

  • too wide
  • MFA/device-commission
  • rental

Diagnostic étape par étape

  1. 1

    Limit the impact.

    Identify whether a position, service or entire site is affected.

  2. 2

    Collecting Evidence.

    Keep the message accurate, time, and associated logs.

  3. 3

    Test the the simplest hypothesis.

    Compare with equipment or functional path.

  4. 4

    Correct and validate.

    Apply only one change at a time and retester.

Solutions possibles

  • Correct the confirmed cause rather than the symptom.
  • Document the change and result.
  • Establish supervision if the defect can recur.
Quand escalader ?

Cadader if the impact extends, if the data are at risk or if the cause involves irreversible modification.

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