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Enable protection against Meltdown and Spectre

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Works with Windows 10 and 11Works with Windows Vista, XP, 7, 8, 10, 11, and Windows Server 2008 or newer.
  • Windows onlyThis script improves your privacy on Windows
  • Multiple actionsThis page belongs to a category, containing some changes with similar goal.
  • Impact: High

    System Functionality / Data Loss Risk: High

    This action improves privacy with high impact when you run the recommended script.

  • Batch (batchfile)These changes use Windows system commands to update your settings.
  • 2 scripts
  • No subcategories
  • Administrator rights requiredThis script requires privilege access to do the system changes
  • Fully reversible

    You can fully restore this action (revert back to the original behavior) using this website.

    The restore/revert methods provided here can help you fix issues.

Overview​

Missing Good Quality Documentation

This page does not yet meet PrivacyLearn's documentation standards. The script/action is stable and verified by community. Here are some options for you to understand its functionality:

Computer-generated docs (PREVIEW)

This documentation may be low quality but still useful.
Read computer-generated explanation

This documentation is automatically extracted from the code implementation.

To block third-party data access leveraging online data privacy measures on Windows, this guidance delivers clarity on: enable protection against Meltdown and Spectre to reduce data leaks for stronger digital privacy measures. Similarly, to reset to original parameters, follow the instructions on this page unpacks the essentials of.

We respect individual privacy preferences as we build stronger secure privacy control. Enabled by this walkthrough, improve important privacy assurance settings and see which steps align with your progress plan. If something feels unclear, take your time to reread. Clarity will come with patience.

Reference: https://support.microsoft.com/en-us/topic/kb4072698-windows-server-and-azure-stack-hci-guidance-to-protect-against-silicon-based-microarchitectural-and-speculative-execution-side-channel-vulnerabilities-2f965763-00e2-8f98-b632-0d96f30c8c8e

Technical Details​

To help increase personal privacy measures, this tweak implements registry security modifications to realize precise privacy configurations. In relation to reducing registry overhead, this would reduce system overhead.

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Gives more context about the goal of the changes
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Review code

Requires technical knowledge about Batch (batchfile)
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Requires technical knowledge about YAML and Git
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Not Advised

This script should only be used by advanced users.

This script is not recommended for daily use as it breaks important functionality.

Consider creating a system restore point before doing any changes.

Apply Now​

Choose one of two ways to apply:

Download script​

Download and run the script directly
  • No app needed
  • Offline usage
  • Easy-to-apply
  • Free
  • Open-source

Maximum — Strongest Possible Privacy (Military-Grade)​

Read more about Maximum and other protection levels

Help

How to apply or restore "Enable protection against Meltdown and Spectre" using script​

  • ≈ 2 min to complete
  • Tools: Web Browser
  • Difficulty: Simple
  • ≈ 5 instructions
  1. 1

    Download

    Download the script file by clicking on the   Apply protection  button above.
    Use   Undo protection button above to restore changes.
  2. 2

    Keep the file

    If warned by your browser, keep the file.
  3. 3

    Open

    Open the downloaded file.
  4. 4

    Exit

    Once it's done, press any key to exit the window.
  5. 5

    Restart

    Restart your computer for all changes to take effect.

Apply with privacy.sexy​

Guided, automated application with safety checks
  • Recommended for most users
  • Includes safety checks
  • Shows the code
  • Free
  • Open-source
  • Popular
  • Offline/Online usage
Open privacy.sexy
Help

How to apply or restore "Enable protection against Meltdown and Spectre" using privacy.sexy​

  • ≈ 3 min to complete
  • Tools: privacy.sexy
  • Difficulty: Simple
  • ≈ 4 instructions
privacy.sexy is free and open-source application that lets securely apply this action easily with more advanced options.
  1. 1

    Open or download

    Open or download the desktop application
  2. 2

    Choose script

    1. Search for the category name: Enable protection against Meltdown and Spectre
    2. Check the category by clicking on the checkbox of the category.
  3. 3

    Run

    Click on ▶️ Run button at the bottom of the page.

    This button only appears on desktop version (recommended). On browser, use 💾 Save button.

Explore This Guide​

  • 2 Privacy settings

Choose what to protect based on your needs:

Click any option to learn more about what it does.

Each change can be applied and reversed individually.

Some settings and commands may require technical knowledge to apply correctly.

Mitigate Spectre Variant 2 and Meltdown in host operating system

This publication —mitigate Spectre Variant 2 and Meltdown in host operating system— provides answers on how to keep personal data safe from system data privacy security on Windows. From this perspective, steps to revert back to standard settings are included in this cheatsheet. Technology serves humanity through data handling integration, not the reverse.Personal sovereignty in the digital realm begins with personal data privacy maintenance. Apply (learn how to (Reference: finalize)) this manual to...

Mitigate Spectre Variant 2 and Meltdown in Hyper-V

This handbook: mitigate Spectre Variant 2 and Meltdown in Hyper-V — consists of scripts to how to reduce data exposure as a result of information privacy defenses on Windows. Plus, this update simplifies your journey into understanding how to return to initial state. Preserving digital autonomy is anchored in sensitive data protection. To improve important privacy measures options by following this enhancement, follow the steps and choose from the (Reference: available paths). Follow the guide as c...

Similar Guides​

Wider Goal​

The guide below includes this guide to achieve a wider goal.

See other more general settings that includes this one as one of its actions.

These plans combine multiple privacy settings, including this one, for stronger protection.

This category encompasses a range of scripts designed to improve the security of your system by enforcing security best practices. These scripts help protect your ...

— Security improvements

Same Goal​

Other guides in Security improvements 

See settings that are in the same category as this guide.

Using other actions in the same category may help you achieve your goal better.

See all 10 guides

About the Creators​

These people have authored this documentation and written its scripts:

  • Avatar of undergroundwires. The creator of PrivacyLearn and privacy.sexy. Black and white portrait showing a person wearing a polka dot tie and suit jacket, reflecting the professional expertise behind the privacy protection tools.
    • Certified security professional
    • 7+ years experience securing banks
    • Open-source developer since 2005
    • EU advisor, Public Speaker, Moderator
    • Hundreds across the globe
    • Testers, reviewers, developers
    • Companies, military agencies
    • Community since 2017
About Us

Reviewed By​

This guide has undergone comprehensive auditing and peer review:

  • Expert review by undergroundwires​

    • Verified technical accuracy and editorial standards
    • Assessed system impact and user privacy risks

  • Public review by large community​

    • Privacy enthusiasts and professionals peer-reviewed
    • Millions of end-users tested across different environments

History​

We continually monitor our guides, their impact and all other privacy options. We update our guides when new information becomes available. On every update, we publicly store who made the change, what has been changed, why the change was made and when the change was made.

Review Change History Our Change Process