AZ900 exam registration issues

The error during AZ-900 registration and payment is commonly caused by an issue with the exam delivery account (for example, a Pearson VUE account block such as ERROR_VUE_WIDE_BLOCK, often due to multiple failed payments) or a problem on the exam provider’s side.

Use these steps:

1. If the error appears on the Pearson VUE pages (scheduling or payment):
   • Contact Pearson VUE Support directly for Microsoft exams so they can check whether the account is blocked and remove any block if needed:
   – Pearson VUE Support (technical issues with exam delivery): https://support.pearsonvue.com/Selfhelp/s/?clientCode=MICROSOFT&language=en_US
   – Pearson VUE Support (appointment and scheduling issues): https://home.pearsonvue.com/microsoft/contact
2. If the error appears on the Microsoft Learn / Certification site before reaching Pearson VUE:
   • Go to Credentials Support and follow the “Microsoft Certifications and Microsoft Certification Exams” section to open a support request: https://aka.ms/Credentials-Support (linked from the Credentials Support page).
   • Use the “For all other Microsoft Certification issues” option if none of the more specific categories fit.
3. If the error message explicitly tells to contact site support and persists after retrying in a different browser or network, do not keep retrying payments; contact support as above so they can investigate the account and transaction history.

If the issue is a Pearson VUE account block, only Pearson VUE Support can lift it; retrying on the Microsoft Learn site will not resolve it.

References:

• Credentials support
• Getting this error while registering for a Microsoft certification. - Microsoft Q&A
• Unexpected Error When Scheduling Exam - Microsoft Q&A