Hi @Mark Williams,
Thank you for posting your question in the Microsoft Q&A forum.
I completely understand how disruptive this situation can be, especially when you need immediate access to your account to continue working and suddenly find yourself blocked.
Within Microsoft’s ecosystem, an account can be marked as “blocked” for different reasons, and the resolution depends on the type of account you’re using. To help clarify, please refer to the scenarios below.
1/ If this is a work or school (business) account:
When a work account is blocked, it is typically due to your organization’s security policies, for example, sign‑in risk detection or Conditional Access rules. In these cases, account access is managed entirely by your organization, and forum moderators like us does not have the ability to override those controls.
For this reason, the best next step is to contact your company’s IT department or helpdesk as soon as possible. They can review the reason for the block and unblock your sign‑in if appropriate.
Specifically, your IT administrator can sign in to the Microsoft 365 admin center > Users > Active users, select your affected account, and, if Sign‑in blocked is enabled, choose Unblock sign‑in to restore access.
2/ If this is a personal Outlook.com or Hotmail account:
If you’re using a personal Microsoft account, Microsoft provides a self‑service recovery process. I recommend starting with the official Outlook.com Sign‑in Helper, which guides you through verifying your identity, usually via a security code, and restoring access.
Alternatively, you can visit account.microsoft.com to request a security code (the phone number does not need to be tied to the account) and, if prompted, reset your password as part of the recovery process.
Additionally, if your Outlook.com mailbox or OneDrive storage is full, sending or receiving email may be restricted until storage is cleared, so it’s also worth checking your storage status once you regain access.
Helpful official resources:
Note: We appreciate your understanding regarding the scope of support available through this forum. As moderators, our role is to provide general guidance and assist with common troubleshooting steps. While we do not have access to internal systems or administrative tools required to resolve account-specific or backend-related issues but we’ll continue doing our best to support you within the scope of our responsibilities.
I hope this information helps move things forward. Please proceed with the outlined steps and let me know whether they resolve the issue. If not, I’ll be glad to continue working with you to find a solution.
Thank you for your patience and understanding throughout this process. Should you have any questions or need further assistance, feel free to reach out at any time.
I look forward to hearing from you.
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