Windows Enterprise activation error after Microsoft 365 E3 license upgrade

Question

We have an issue with a computer connected to Azure AD, after a user account had their licence upgraded to Microsoft 365 E3 from Office 365 E3, Windows upgraded itself to Windows 11 Enterprise from Pro, and now it has failed activation.

Please help us troubleshoot why Windows has failed activation.

Troubleshoot says make sure you are connected to the Internet, but the device obviously is.

Answer 1

Dear Stephen_716

Thank you for posting in the Microsoft community.

After upgrading from Office 365 E3 to Microsoft 365 E3, Windows devices are automatically upgraded from Pro to Windows 11 Enterprise with activation failure issues, which is a common occurrence when there is an issue with the Microsoft 365 E3 automatic upgrade feature and activation process. Below are the possible causes and step-by-step solutions:

Possible causes

1. License assignment issue:

The user may not have correctly assigned the Microsoft 365 E3 license, which contains upgrade rights for Windows 11 Enterprise Edition. Activation may fail if the license is not fully enabled or not properly synchronized.

2. Azure AD activation delay:

Microsoft 365 E3 uses AAD (Azure Active Directory) - Subscription Activation. Activation is dependent on a successful connection of the device to Azure AD. If synchronization is broken or there are problems with the connection, the activation fails.

3. Cache or system file issues:

The device may not have cleared the original Windows Pro activation record, causing activation for Enterprise to fail.

4. Network or service failure:

Even if the device is connected to the Internet, activation relies on the Microsoft Activation Server. If the network configuration or firewall is blocking the activation request, an error may also occur.

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Solution

1. Verify that the Microsoft 365 E3 license has been successfully assigned

1. Log in to the Microsoft 365 Admin Center:

Open the Microsoft 365 Management Portal.

Go to Users > Active Users and locate the affected user account.

Check if the full Microsoft 365 E3 license is assigned to this user.

2. Verify that the license has the Device Activation option enabled:

Click on the user's license configuration and verify that the Windows Enterprise Upgrade option is enabled.

If it is not enabled, check Enabled and then Save.

3.Ensure that the device is properly connected to Azure AD

Windows Enterprise activation relies on a correct Azure AD connection. You can verify the connection status by following these steps:

1. Open Settings > Accounts > Work or School Account.
2. Verify that the device is enrolled in Azure AD, not just “connected” to AD.
3. If the device is not properly joined to Azure AD, but the user has permissions:

Click Connect to Azure AD or Reassociate.

4. Verify the Azure AD tenant information for the appliance:

Open a command prompt and enter the following command to view the Azure AD status:

dsregcmd /status

In the AzureAdJoined field, verify that the status is YES.

If the appliance is not bound to the correct Azure AD, rejoin the appliance.

4.Reboot and force synchronization of activation information

In the Microsoft 365 activation mechanism, it may be necessary to re-establish the activation service connection:

1. Open a command prompt and run the following command:

gpupdate /force

Force an update to the group policy to ensure that the activation group policy is in effect.

2. Reboot the device and then manually try to reactivate it (check the steps above)

5.Check network and firewall settings

Ensure that the device can access the Microsoft Activation Server. A firewall or proxy server may be blocking the address in question.

1. Check that the device can access the following URLs:

https://activation.sls.microsoft.com/

https://sls.update.microsoft.com/

2. If using a proxy server or strict firewall rules, you need to ensure that the following ports are open:

80 (HTTP)

443 (HTTPS)

3. In a command prompt, run the following command to ensure that the device can resolve domains:

nslookup activation.sls.microsoft.com

6.Verify the Windows system date and time

Incorrect system time can also cause activation to fail.

1. Check that the date and time are synchronized with the network time:

Open Settings > Time and Language > Date and Time.

Ensure that Setting the time automatically is enabled.

2. If time synchronization fails, you can set the current time manually.

7.Uninstall and rejoin the appliance to Azure AD

If you confirm that the user license and device configuration are correct, but the problem persists, you can try the following:

1. Open Settings > Accounts > Work or School Account.
2. Click Disconnect to remove the device from Azure AD.
3. Rejoin the device to Azure AD:

Connect to Azure AD again.

4. Reboot the device and recheck that the activation status has been updated.

Summary

-Ensure that the user is assigned a Microsoft 365 E3 license and has Windows Enterprise Edition activation rights enabled.

-Verify that the device is properly bound to Azure AD and that the system status is normal.

-Check that the activation server connection is not blocked by the firewall.

-Trigger activation manually through troubleshooting and commands or perform system repair.

Following the steps above will usually resolve the failed activation, but if the issue persists, we recommend contacting the Microsoft Enterprise Support team for further assistance

Happy New Year~

Best Wish

Shawn.Z-MSFT | Microsoft Community Support Specialist