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How to Fix Microsoft 365 Error 135011: Device Blocked
Question details
The user is unable to access Microsoft 365 apps because their device or university account has been blocked by the organization, resulting in error code 135011.
- Product
- Microsoft 365
- Device & OS
- not provided
- Scenario
- Attempting to log into or use Microsoft 365 applications on a device using a university-managed account.
- Observed behavior
- Access to Microsoft 365 is denied, and the application displays error code 135011, indicating that the device has been disabled or deleted in the organization's directory.
Before reaching out to support, take a full screenshot of the error message, ensuring the correlation ID and timestamp are visible, as this will help your IT administrator locate your device faster.
Contact Your University IT Administrator
This error is enforced by your university's Microsoft Entra ID policies and cannot be bypassed locally; an administrator must re-enable your device.
Error 135011 specifically occurs when a device is either deleted or disabled in an organization's Microsoft Entra ID (formerly Azure AD) network. Because you are an end-user, your university account does not have the administrative privileges required to restore device access.
To regain access to your Microsoft 365 apps, you must work directly with your school's technical support department.
Take a screenshot or write down the exact error message, including Error Code 135011 and any correlation IDs provided on the screen.
Reach out to your university IT help desk via phone, email, or their official support portal.
Inform the support agent that your device appears to be disabled in Microsoft Entra ID and provide them with the screenshot, your student email address, and your device's hostname.
The IT administrator will log into the Microsoft Entra admin center, locate your specific device under the 'Devices' tab, and click the option to 'Enable' it.
Use WPS Office While Your Microsoft Account is Blocked
If your university Microsoft 365 account is temporarily disabled by Error 135011 and you need to complete assignments urgently, WPS Office serves as an excellent, free alternative. You can continue working on all your documents without needing an active university login.
- 1. Download and Install WPS Office: Visit the official WPS website, download the free software suite, and install it on your computer.
- 2. Open Your University Documents: Launch WPS Office and directly open your existing Microsoft 365 files. No login to a disabled Microsoft account is required.
- 3. Edit and Save Seamlessly: Complete your coursework and save the files in their original Microsoft formats, ensuring your professors can open them without issues.
Frequently Asked Questions
Can I fix Microsoft 365 Error 135011 by reinstalling the software?
No, reinstalling Microsoft 365 will not fix this issue. Error 135011 is a network directory block enforced by your university's Microsoft Entra ID. The restriction is tied to your device's hardware and account identity, not the local software installation.
Why did my university device get blocked in the first place?
Devices are typically disabled by IT administrators for security reasons, such as suspected account compromise, long periods of inactivity, non-compliance with university security policies, or administrative errors during routine directory cleanups.
Does Error 135011 affect my personal Microsoft account?
No, this error only affects the specific university or organization account that manages the device. You can still use your personal Microsoft account on the same computer, provided you sign out of the blocked university account.
Is it possible to re-enable the device from Windows settings myself?
As an end-user, you cannot re-enable the device once it has been disabled in the centralized Microsoft Entra ID. However, if your IT administrator confirms they have deleted (not just disabled) the device, you may need to go to Windows Settings > Accounts > Access work or school, disconnect the account, and then reconnect it to re-register the device.
