Hi Michael,
Thank you for contacting the Microsoft Community.
I understand the inconvenience you're experiencing with the account issue that causes a loop back to the registration page when trying to reschedule the exam. I recognize the importance of a seamless process for rescheduling your exam, as we value your time. Rest assured, now that I am aware of the problem, I will address it with diligence.
I appreciate you performing troubleshooting steps to resolve the error. Since you have cancelled the exam already through Pearson Vue and if in case you plan to schedule an exam in the future and still encounter the same issue, kindly provide a step-by-step recording using Problem Steps Recorder (PSR) throughout the entire process, starting from the sign-in page up until the last page that shows you're unable to proceed along with the requested information in the private message I have initiated. This will enable me to locate your account and provide you with an option on how you can schedule your exam.
If you are an ESI learner who has taken advantage of a company discount for the exam and need urgent help with scheduling, I strongly recommend contacting the ESI support team (refer to the private message for their contact information) as they address issues specific to ESI learners. Otherwise, please contact Pearson Vue directly, as they have immediate access to your exam appointments and have the visibility on the available seat allocation for the test.
They typically respond within 3-5 business days. Once contacted and you require additional support, please send me the case Id through the private message so we track the case on your behalf.
Should you have any questions or clarifications, please feel free to reach out.
I look forward to your response. Please note that if no response is received after two business days, the case will be closed and locked. After the case is locked, we will no longer be able to respond, even through Private Messages. Thank you.
Best regards,