AB-900: Microsoft 365 Copilot and Agent Administration Fundamentals

Contact Pearson VUE Support immediately and request a review of the AB-900 appointment because the system check prevented you from entering the exam; Microsoft Learn Q&A cannot reschedule an exam directly.

Request the appointment review

1. Open Pearson VUE Support.
2. Select the option for a Microsoft exam appointment or online-exam technical issue.
3. Provide:
   • Exam: AB-900
   • Scheduled date, time, and time zone
   • Registration/order number
   • The time you started check-in
   • A concise explanation that the system check delayed or blocked entry
   • Screenshots, error messages, and check-in or proctor-chat records, if available
4. Ask Pearson VUE to inspect the session logs and determine whether the appointment can be reinstated or rescheduled.

Microsoft directs technical exam-delivery and scheduling issues to the exam delivery partner, including Pearson VUE Support.^1^

Do not post your candidate ID, registration number, email address, or other personal details publicly.

If Pearson VUE cannot resolve it

Submit a Microsoft Credentials Support request:

1. Open the Credentials support page and select online support request.
2. Choose:
   • Product family: Learning
   • Product or Service: Microsoft Credentials
   • Type of Support: Professional No Charge
   • Preferred contact method: Email
3. Include the Pearson VUE case number, appointment details, screenshots, and a description of the system-check delay.^1^

A missed appointment normally cannot be self-rescheduled afterward. Microsoft’s policy requires changes at least 24 hours before the appointment; otherwise, the exam fee or voucher may be forfeited.^2^ Because this involved check-in or exam-delivery trouble rather than an advance schedule change, support must review the session and decide whether an exception applies.

References

1. Credentials support | Microsoft Learn
2. Reschedule and cancellation policies | Microsoft Learn