How to disable Downfall pHow to disable Downfall patch and Meltdown/Spectre patch together?atch and Meltdown/Spectre patch together?

林沐雨 10 Reputation points
2023-08-30T04:00:43.4966667+00:00

As you know, MS just release a method to disable Downfall patch

https://support.microsoft.com/en-us/topic/kb5029778-how-to-manage-the-vulnerability-associated-with-cve-2022-40982-d461157c-0411-4a91-9fc5-9b29e0fe2782

a

Registry location: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management
Value name: FeatureSettingsOverride
Value type: REG_DWORD
Value data: 0x2000000 (hex)

and I set this  value to 3 to disable Meltdown/Spectre patch 

To disable mitigations for CVE-2017-5715 (Spectre Variant 2) and CVE-2017-5754 (Meltdown)

reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management" /v FeatureSettingsOverride /t REG_DWORD /d 3 /f

reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management" /v FeatureSettingsOverrideMask /t REG_DWORD /d 3 /f

Note: Setting FeatureSettingsOverrideMask to 3 is accurate for both the "enable" and "disable" settings.

how I can disable them together? thank you

Windows 11
Windows 11
A Microsoft operating system designed for productivity, creativity, and ease of use.
11,872 questions
0 comments No comments
{count} votes

1 answer

Sort by: Most helpful
  1. Anonymous
    2023-09-14T09:30:42.53+00:00

    Hi,

    It seems like a bit-flag value. Please see if set the data of the registry value FeatureSettingsOverride to 0x2000003 can disable both patches.

    Best Regards,

    Ian Xue


    If the Answer is helpful, please click "Accept Answer" and upvote it.

    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

    2 people found this answer helpful.
    0 comments No comments

Your answer

Answers can be marked as Accepted Answers by the question author, which helps users to know the answer solved the author's problem.