AI Skill Fest Voucher Issue

This sounds like a voucher validation issue rather than an issue with the exam eligibility window.

Since the exam was already scheduled using the voucher before the voucher expired, and you're trying to reschedule it within the original allowed exam period, Pearson VUE should be able to confirm whether the voucher can be transferred to the new appointment.

I would recommend contacting Microsoft Credentials Support and providing:

The voucher redemption date

Your original exam appointment date

The new date you're trying to schedule

The exact error message

The voucher/order reference (without posting the full voucher code publicly)

Ask them specifically to verify whether the voucher should remain valid for rescheduling an existing appointment after the voucher's nominal expiration date.

Pearson VUE may handle the appointment itself, but Microsoft should be able to clarify the voucher's restrictions and correct the entitlement if it is being incorrectly rejected.