A free program from Microsoft that provides developers with the tools, resources, and sandbox environments needed to build solutions for Microsoft 365.
Hi @Nadeem M. Anjum
Based on the detailed information you provided, I understand that your E5 Developer Sandbox OneDrive has unexpectedly switched to Read-Only mode across all platforms (web, Windows 11, and mobile). You are entirely unable to perform any "Write" actions, despite verifying that there are no expiration alerts or Acceptable Use Policy (AUP) violation banners in your Admin Center.
After researching this specific behavior, I found that many other users in the Developer Program are currently experiencing this exact same issue with their tenants.
As a first step, could you please try logging directly into your SharePoint Admin Center? Sometimes, backend locks or provisioning errors will surface a specific error message there that doesn't appear in the standard Microsoft 365 Admin Center.
Regarding your request to check the backend "LockState," please note that as a community support forum, moderators and contributors do not have the permissions or access to internal backend systems to check or modify your tenant's provisioning status.
According to a user who recently navigated a very similar situation, the best course of action is to raise a support ticket directly through your Microsoft 365 Admin Center. The internal support team has the necessary tools to check the server-level restriction and unlock the tenant.
You can refer to the discussion of the similar issue here for more context:
Thank you for your detailed troubleshooting notes, and I hope the support team is able to restore your access quickly so you can get back to your development work.
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