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Step-by-Step Guide to Fix Windows Activation Error |
Incorrect KMS Host Product Key
How do I fix Windows activation errors?
Before applying the solutions, here are a few things you can apply and resolve the error:
Restart your PC. Sometimes a quick restart can help with all sorts of Windows problems.
- Disable your antivirus and firewall temporarily since it’s possible that they are interfering with your connection.
- If these short steps didn’t fix the situation, follow the solutions below to resolve the Windows activation error.
Once you have taken a backup of your important data then let's reinstall windows 10
- 1. Click on the start button
- 2. Click the setting option.
- 3. Choose Update & security
- 4. Click on the recovery option
- 5. Then first click on the reset this pc
- 6. Now choose to get started option
- 7. Choose to Remove everything to confirm better reinstallation.
In short : start>setting >update & security>
So, if you're ready to get rid of that bothersome watermark and fully activate your Windows operating system, then this is the video for you. Follow along with our easy-to-understand instructions and watch as your "Activate Windows" error becomes a thing of the past.
Common Windows Activation Errors
Here are some of the most frequent Windows activation error codes and their causes:
- 0xC004C008 – The product key has been used on too many devices.
- 0xC004F034 – Invalid or incorrect product key.
- 0xC004F074 – Windows cannot reach activation servers.
- 0xC004C003 – The key has been blocked by Microsoft.
- 0x803F7001 – No valid product key detected.
Now, let’s go through the steps to resolve these activation issues.
Popular Windows Activation Errors
In this part, several common Windows activation errors will be introduced. Then, I’ll share with you how you can fix Windows activation error.
perform an in-place upgrade.
It’s a good idea to upgrade to a new version of Windows with files, settings, and applications kept intact.
- Revert to the previous version of Windows.
- Make sure which updates are necessary for the upgrade of Windows 10 and install them all.
- Check whether the current version is fully activated or not.
- Get Media Creation Tool and run it.
- Choose Upgrade this PC now. Then, click Next.
- Select Download and install updates. (This step is not mandatory, so you can skip according to needs.)
- Wait for the download and check process to finish.
- Select Change what to keep and decide the files you want.
- Click Next and Install.
- Wait patiently.
How to Use the Activation Troubleshooter:
- Press Windows + I to open Settings.
- Click Update & Security > Activation.
- Select Troubleshoot and follow the on-screen instructions.
- This tool can resolve minor activation problems automatically.
Performing an in-place upgrade in Windows 11
Changes Made During Reset
- Removes all installed applications not included with Windows
- Returns all Windows settings to their original state
- Depending on your chosen options, may remove personal files
- Reinstalls the Windows operating system fresh
- Removes system modifications and customizations
- Clears temporary files and cached data
- Removes user profiles and accounts
- Resets all system settings to default values