How to enable greyed-out Microsoft Vulnerable Driver Blocklist which is shown as Security Alert in Taskbar?

Yes thanks for the heads-up about the update being released, I installed it too and the security issue warning has gone so seems fine now.

By the way the driver blocklist on/off toggle might still be greyed out and stuck On but that is by design now as if you have Memory Integrity (aka HVCI), Smart App Control, or S mode enabled then the Driver Blocklist is forced On as it is part of those functions. If you disable those then the toggle becomes active and Driver Blocklist can now be switched on or off as you wish.

Nancy - thanks for your feedback too.

Yes mine is still visible but greyed out like yours under Core isolation.

:-)

Thanks Perry for letting us know about that update. I checked and see that it was successfully installed on July 5 on my laptop. I still have the Vulnerable Driver Blocklist grayed out under Core Isolation, but, like you, there is no longer a yellow flag on the windows security icon anymore so I am happy about that.

I had my first update for 'ages' today called "Update for Windows Security platform antimalware platform - KB5007651 (Version 1.0.2306.10002)" and the greyed out issue has gone!

All appears to be 'fixed' and all indications are now that there are no issues and no action needed is shown against all the security entries.

NOTE: the Vulnerable Driver Blocklist no longer exists as an entry BUT all 'looks' OK and I no longer have a highlighted tick on my Windows Security icon in my task bar.

I first reported this issue via this forum on 9th May but the responses show it has been around for many months.

Am I reassured by Microsoft's responsiveness - not really considering the commented feedback from individuals who had the issue and their own 'feedback/responses" from Microsoft.

Hopefully this is now an end to it.

I will still be thinking about an alternative to Microsoft on my next purchase.

Excellent reply. Microsoft is a large organisation and does not care if we leave them or are not happy with their service. They are big, powerful but collectively, we too have power.