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Sometimes after updating Windows 11, you may notice that your system becomes deactivated. This can be frustrating, especially if you rely on an activated Windows for full functionality. The good news is that this issue can often be fixed with a few straightforward steps.

In this guide, we will walk you through simple and effective methods to reactivate Windows 11 after an update. Each step is explained clearly, so even beginners can follow along without trouble.

By the end, you’ll know how to check your activation status, troubleshoot common problems, and explore advanced options if needed. Let’s get started and get your Windows back to full activation.

Follow the instructions carefully to avoid any confusion or mistakes. Reactivating your Windows should be quick and easy.

Quick Note Before You Begin

Before diving into solutions, please make sure of the following:

• Check your internet connection: Windows activation requires online verification, so a stable internet connection is essential.
• Confirm your Windows 11 edition: Activation methods may differ for Home, Pro, or Enterprise versions.
• Have your product key handy: If your copy of Windows 11 uses a product key, keep it ready for reactivation steps.
• Ensure your device is linked to your Microsoft account: This helps with digital license activation.

Step 1: Verify Your Windows Activation Status

Before trying to fix anything, it’s important to confirm whether Windows is truly deactivated or if it’s a temporary error.

1. Click the Start button and select Settings.
2. Go to System and then choose Activation.
3. Look under the Activation state section.

If it says Windows is activated, then no action is needed. But if it shows Windows is not activated or a similar message, proceed with the next steps.

Step 2: Run the Activation Troubleshooter

Windows 11 includes a built-in troubleshooter designed to identify and fix activation problems automatically.

1. Open Settings and navigate to System > Activation.
2. Click on Troubleshoot (this option appears only if Windows is not activated).
3. Follow the on-screen instructions carefully.

This tool will check common issues and attempt to reactivate Windows if possible. It’s often the quickest fix.

Step 3: Reactivate Windows Using Your Product Key

If the troubleshooter does not fix the problem, you can try manually entering your product key.

1. Go to Settings > System > Activation.
2. Click Change product key.
3. Enter the 25-character product key exactly as provided.
4. Click Next and follow the prompts to activate.

Using the correct product key tells Windows to validate your license again, which may be necessary after updates interfere with activation.

Step 4: Link Your Microsoft Account to Your Windows License

Windows 11 supports digital licenses linked to Microsoft accounts, which can make reactivation easier after hardware changes or updates.

1. Click the Start button, then open Settings.
2. Go to Accounts > Your info.
3. If you are not signed in with a Microsoft account, click Sign in with a Microsoft account instead and follow the login steps.
4. Once signed in, return to Settings > System > Activation and click Reactivate (if available).

This process links your digital license to your Microsoft account, allowing Windows to recognize your device and activate automatically.

Step 5: Use Command Prompt to Refresh Activation

If previous steps do not work, you can use the Command Prompt to manually force Windows to attempt activation again.

1. Right-click the Start button and select Windows Terminal (Admin) or Command Prompt (Admin).
2. Type the following command and press Enter:

slmgr.vbs /ato

3. This command forces Windows to contact Microsoft activation servers.
4. Wait a few moments, then check activation status again in Settings.

This method can resolve issues when activation gets stuck or delayed after updates.

Alternative Method: Reactivate by Phone

If online activation fails, Windows offers a phone-based activation method.

1. Press Windows + R keys to open the Run dialog.
2. Type slui 4 and press Enter.
3. Select your country or region and follow the instructions to get a phone number.
4. Call the number and provide the installation ID when prompted.
5. Enter the confirmation ID given by the phone system into the activation window.

This method connects you directly with Microsoft’s activation support and is useful when online activation is blocked or unavailable.

FAQs

Why does Windows 11 deactivate after an update?

Updates can sometimes reset system files related to activation or detect hardware changes, causing Windows to lose its activation status temporarily.

Can I use the same product key after reinstalling or updating Windows 11?

Yes, most retail or digital licenses allow reactivation on the same device using the original product key.

Is it safe to use third-party activators?

No. Using unofficial tools to activate Windows can harm your system and violate Microsoft’s terms of service.

What if my Windows 11 was pre-installed on my PC?

OEM licenses are tied to your hardware. If you replace major components, you might need to contact the manufacturer or Microsoft support for reactivation help.

How long does it take for Windows to reactivate after following these steps?

Activation is usually immediate once the correct license is recognized, but in some cases, it may take a few minutes.

When Nothing Works

If none of the above solutions fix your deactivation issue, consider these final options:

• Contact Microsoft Support: Use official Microsoft support channels for personalized assistance.
• Check for hardware changes: Significant hardware replacements can cause activation loss; you might need to reactivate or contact support.
• Perform a system restore: Roll back to a point before the update if the deactivation started immediately after updating.
• Reinstall Windows 11: As a last resort, a clean install can reset activation status, but ensure you have your product key beforehand.

Always use official Microsoft resources to avoid security risks and ensure your license remains valid.

Conclusion

Windows 11 deactivation after an update is a common but usually fixable problem. Starting with simple checks and the activation troubleshooter often resolves the issue quickly. If needed, manually reactivating using your product key or linking your Microsoft account helps maintain your license.

Using command line tools or phone activation provides additional options when automatic methods fail. Remember to avoid unofficial activators and seek help from Microsoft if problems persist.

By following these detailed steps, you should be able to restore your Windows 11 activation and continue using your system without interruptions.