Microsoft Vulnerable Driver Blocklist Option Grayed Out? Quick Fixes

Microsoft Vulnerable Driver Blocklist is a very useful feature in Windows Security. It can protect your computer against vulnerable applications. However, when this option grayed out or not working, your system might be vulnerable. Fortunately, this post on MiniTool Website gathers some workable workarounds for you.

Microsoft Vulnerable Driver Blocklist Option Grayed Out

Vulnerable driver can cause harm to your computer. To keep your computer from vulnerable drivers, Microsoft releases a new feature – Vulnerable Driver Blocklist in Windows Security. It can enable a more aggressive blocklist that includes vulnerable drivers.

However, sometimes, you might find Microsoft Vulnerable Driver Blocklist not showing or grayed out for some unknown reasons. Don’t worry! In this post, we have sorted out some useful solutions for you.

Once Microsoft Vulnerable Driver Blocklist grayed out appears, attackers might exploit the known security vulnerabilities to elevate privileges in the Windows kernel, resulting in unexpected data loss. In such a case, if you have a backup of your important files, you can restore your data easily.

Here, we suggest developing a habit of backing up files regularly with a piece of free backup software – MiniTool ShadowMaker. This tool is designed to provide simple and safe steps for you to create a file, folder, system, disk, or partition backup & restore on Windows devices. If you need to back up something important on your PC, it deserves a shot.

How to Fix Microsoft Vulnerable Driver Blocklist Option Grayed Out?

Fix 1: Disable Core Isolation Memory Integrity

If you turn on the Core Isolation Memory Integrity in Windows Security, Microsoft Vulnerable Driver Blocklist grayed out will occur. Therefore, disabling this feature might be a simple fix.

Step 1. Press Win I to open Windows Settings.

Step 2. Go to Update & Security > Windows Security > Device security.

Step 3. Click on Core isolation details and toggle off Memory Integrity.

Fix 2: Switch Out of S Mode

You might encounter Microsoft Vulnerable Driver Blocklist option grayed out when your computer is in S Mode. Follow these steps to turn off S Mode:

Step 1. Go to Windows Settings > Update & Security > Activation.

Step 2. Click on Go to the Store and hit the Get button under Switch out of S Mode to leave the mode.

Fix 3: Disable Smart App Control

Smart App Control is a new security feature in Windows 11 2022 Update, Version 22H2. This feature can block malicious or untrusted apps. If you are using the latest Windows 11 with this feature enabled, you won’t be able to use the Microsoft Vulnerable Driver Blocklist option. Here’s how to do it:

Step 1. Go to Windows Settings > Privacy & security > Windows Security > App & browser control.

Step 2. Click on Smart App Control settings and then toggle on Smart App Control.

Fix 4: Check Registry Settings

Another fix for Microsoft Vulnerable Driver Blocklist option grayed out is to enable this option via Registry Editor. Here are the detailed steps:

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

Step 2. Type regedit.exe and hit Enter to launch Registry Editor.

Step 3. Navigate to the following path:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CI\Config

Step 4. Right-click on VulnerableDriverBlocklistEnable on the right-side pane and choose Modify.

Step 5. Set the value data to 1 and click on OK.

Step 6. Reboot your computer.

If you don’t find the VulnerableDriverBlocklistEnable key, follow these steps:

Step 1. In the Config folder, right-click on the empty space in the right-side pane and choose New > DWORD (32-bit) Value > rename it as VulnerableDriverBlocklistEnable.

Step 2. Double-click on this new value and set the value data to 1.

Step 3. Click on OK to save the changes and reboot your computer.

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