The behavior described matches a registration issue on Microsoft-hosted event portals where the problem is on the service side rather than with the user’s device, browser, or network.
Nothing in the provided context indicates a client-side fix for this specific “There was a problem with your registration” error when others can register for the same event and registration for other events works with the same account.
Given the troubleshooting already done (different email, devices, networks, and browsers), the next step is to escalate to Microsoft support for the event platform rather than continue local troubleshooting. Use the support/contact options exposed on the event or registration site (typically a “Help”, “Support”, or “Contact us” link on the event page or footer) and provide:
- The event ID and name.
- The exact error text (“There was a problem with your registration”).
- The account(s) tried (work vs personal, without sharing passwords).
- Approximate time and time zone of the failed attempts.
If the registration is backed by Microsoft Teams webinar registration services, the event host (organizer) can also open a support case with Microsoft on behalf of attendees. In that case, contact the organizer (for example, via any email address or contact details shown in the invitation or event description) and ask them to:
- Confirm the event’s registration is still open and not at capacity.
- Check whether the registration service is restricted by domain or policy.
- Raise a support ticket with Microsoft if necessary.
No additional client-side steps are supported by the context beyond what has already been tried.
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