Hi Mamatha,
Thank you for contacting the Microsoft Community.
I understand how crucial it is for you to complete your MS-900 exam; especially given all the effort you've put into preparing for it. Rest assured, I'm here to provide you with the support you need.
Normally, for any technical issue encountered before, during, and after the exam, this should be coordinated with your proctor. If in any case the ticket number was not provided, kindly reach out to your exam delivery provider for immediate assistance with feasible options and recommendations. You can reach them via phone or chat using the contact information below:
Peason VUE: https://www.pearsonvue.com/us/en/microsoft.html?tab=help-and-support#contact
Should you need further assistance after reaching out to them, please provide the Case ID along with any necessary information, through the private message I’ve initiated. This will allow us to follow up on your case on your behalf.
For future reference, it is recommended that we use the official system test on the same computer and in the same location, as using a different internet speed checker may result in a different speed that Pearson Vue Software may detect. In addition, it’s essential to thoroughly review the technical tips and ensure that all technical requirements are met before taking the exam. For detailed information, please refer to the Pearson VUE Online Testing Guide and About online exams with Pearson VUE | Microsoft Learn.
Moreover, please know that your feedback is valuable and it’s important that your concerns are addressed. With the experiences that you've had, you can also submit your personal feedback through Pearson Vue. You may refer to Feedback and complaints | Pearson qualifications.
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.
Kind Regards,