Troubleshooting Guide: How to Fix UUID Type Is Not Supported

UUID Type Is Not Supported

When you log into Windows, some processes might be configured to start automatically. The Group Policy Service is part of these processes that communicate with Winlogon service via Remote Procedure Call. In most cases, GPSVC is engaging in the chain of events separately from the beginning. However, when there are other processes in combination with GPSVC, you might get the following error message:

The Group Policy Client Service failed the sign-in. The universal unique identifier (UUID) type is not supported.

UUID type is not supported indicates that GPSVC fails to connect to Winlogon and it usually occurs when logging into your Windows with a newly created user account. Now, scroll down to get more available workarounds.

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Solution 1: Force GPSVC to Initiate Separately

At first, you need to take ownership of the gpsvc key in Registry Editor. Then, force the GPSVC to initiate as a separate process from the beginning rather than working into a shared environment. Follow these steps:

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Step 1. Press Win + R to open the Run dialog.

Step 2. Input regedit and hit Enter to launch Registry Editor.

Step 3. Navigate to the following address to locate the gpsvc key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\gpsvc

Step 4. Right-click on the gpsvc key > select Permissions > hit Advanced > click on the Change link > hit Advanced in the Select User or Group window > hit Find Now to select the account that you want to take owenership of > hit OK.

Step 5. Select the account name displayed on Select User or Group window, click on OK.

Step 6. In the Advanced Security Settings for Windows Defender window, tick Replace owner on subcontainers and objects option and then hit Apply to make the change take effect.

Step 7. Launch Command Prompt as an administrator and run the command below to force GPSVC to initiate as a separate process from the beginning:

reg add “HKLM\SYSTEM\CurrentControlSet\Services\gpsvc” /v Type /t REG_DWORD /d 0x10 /f

After that, GPSVC can communicate correctly with Winlogon and you will not be bothered by the UUID type is not supported issue any more.

Solution 2: Enable Configure User Group Policy Loopback Processing Mode

Some users shared on forums that enabling the Configure user Group Policy loopback processing mode policy in Local Group Policy Editor can also help to iron out the universal identifier type is not supported error. Log into Windows with other available account and follow these steps:

Step 1. Press Win + R to open the Run box.

Step 2. Type gpedit.msc and hit Enter to launch Local Group Policy Editor.

Step 3. In the left pane, expand Computer Configuration > Administrative Templates > System.

Step 4. In the right pane, double-click on Group Policy.

Step 5. Scroll down to locate the Configure user Group Policy loopback processing mode policy.

Step 6. Tick the Enabled option and then click on Apply & OK to make the changes effective.

Final Words

Now, you must get free from the UUID type is not supported error and manage to log into Windows with the newly created user account. Meanwhile, the importance of backup can’t be overlooked. With a backup in hand, it will be much easier to restore your data.