This time, we will introduce the cause and solution for when "Standard hardware security is not supported" is displayed in the "Device Security" tab of Windows Security after restarting after performing the solution for the "Interface not supported" error that we previously introduced in Windows 11.
specific symptoms
After re-registering the DLL to resolve the "Not supported interface" error, restart your PC.Task tray (notification area)Windows Security appears briefly and then disappears.
Causes and Solutions for the "Unsupported Interface" Error
Then, if you open Windows Security from Settings and open the Device Security tab, you will see the message "Standard hardware security is not supported," and below that an explanation will be displayed stating that the requirements for standard hardware security are not met.
*Actually meets standard hardware security requirements.
This issue has only been confirmed on Windows 11, and I have actually confirmed it on all three of my PCs.
What causes the "Standard Hardware Security Not Supported" error?
The reason why you see the message "Standard hardware security is not supported" is because the dll file "SecurityHealthProxyStub.dll" loaded when starting Windows Security is incorrect. *Version mismatch.
At startup, Windows Security loads "SecurityHealthProxyStub.dll" located in the following location:
C:\Windows\System32\SecurityHealth\Windows セキュリティサービスバージョン\SecurityHealthProxyStub.dll
However, if you take the steps to resolve the "Interface not supported" error, the registry value specifying the "SecurityHealthProxyStub.dll" to be loaded will be changed to the "SecurityHealthProxyStub.dll" in a different location.
What happens then is that a different version of "SecurityHealthProxyStub.dll" is loaded, and Windows Security is unable to load the correct information.
To put it simply, in the current version, you put tools in the right-hand side of the two boxes and take them out to use, but in the old version, you put tools in the left-hand side.
The program will then work the way the current version does, so go to the box on the right to get your tools.
However, there is nothing in the box on the right, so the work stops there.
How to resolve "Standard hardware security is not supported"
If you experience problems with Windows Security after initializing Windows 11, rather than after performing the solution to the "Not supported interface" error (re-registering the DLL), try the method on the next page.
Win11 Windows security is blank and restricted by IT administrator.
If the "Device Security" tab displays two items, "Core Isolation" and "Secure Boot," and below them it displays the message "Standard hardware security not supported," please see the following page.
Checking the current Windows security service version
1. Press Windows key + I to open Settings.
2. Click "Privacy and Security" on the left.
3. Click Windows Security.
4. Click "Open Windows Security."
5. Once Windows Security opens, click the gear icon in the bottom left.
6. Click "About" under "Notifications."
7. Check the "Windows Security Service Version" here.
Get the path of a file
1. Open File Explorer and open the following folder:
C:\Windows\System32\SecurityHealth
2. Now open the "Windows Security Service Version" folder you checked earlier.
*There may be multiple version folders, so be sure to open the folder for the current version you have confirmed.
3. Right-click on "SecurityHealthProxyStub.dll" in the folder and click "Copy Path".
Next, we will edit the registry.
Editing Registry Values
If you operate the registry incorrectly, it may cause problems such as the system being unable to start. Please make a backup in advance using system restore or similar, and proceed at your own risk.
- How to create and restore a system restore point
- How to open and back up the Registry Editor
- Windows 11/10 Registry Basics: Concept, How to Open, and Internal Structure
- How to Take Ownership and Change Permissions in Windows 11 Registry
1. Press Windows key + R to open Run, type "regedit" and press Enter.
2. The Registry Editor will open, so open the following key:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{36383E77-35C2-4B45-8277-329E4BEDF47F}\InProcServer32
3. With the "InProcServer32" key selected, double-click "(Default)" in the right column to open it.
4. Delete the path entered in the Value data field and paste the path you copied.
*If there are double quotation marks " " on the left and right, please delete them.
C:\Windows\System32\SecurityHealth\1.0.2306.10002-0\SecurityHealthProxyStub.dll
5. Copy and paste the following symbols at the beginning of the path:
\\?\
The final result will look like this:
\\?\C:\Windows\System32\SecurityHealth\1.0.2306.10002-0\SecurityHealthProxyStub.dll
6. Click OK.
7. Once you have finished editing, close the Registry Editor and restart your PC.
When your PC starts up, the Windows Security icon in the taskbar will return and the Device Security tab will be displayed normally.

If you see the message "Standard hardware security is not supported" in an environment where you have not taken the steps to resolve the "Interface not supported" issue, it is likely a bug in Windows 11.
In that case, please try the "SecurityHealth" repair method on the next page.













