Upgrade Windows 10 from Home to Pro Edition for Free

The main differences between Windows Home and Pro editions are not immediately clear, but a brief introduction can be found in the picture below. (Note: I removed the "Don't know" phrase as it's not necessary and made the text more concise)

Windows 10 Home vs Pro

How to upgrade Windows 10 from Home to Pro edition? Without a key?

You can upgrade Windows 10 from Home edition to Pro edition for free by using the built-in upgrade tool in Windows 10. The tool allows you to upgrade to the Pro edition from the Home edition, and it will not cost you anything. Just go to Settings > Update & Security > Activation, and click on the "Go to Microsoft Store" button to start the upgrade process.
You can upgrade from Windows 10 Home to Pro edition without a key. To do this, go to the Microsoft Store, search for "Windows 10 Pro", and click on the "Upgrade" button. Follow the prompts to complete the upgrade.
You can upgrade Windows 10 from Home to Pro edition without losing data or formatting using two free methods, as recommended by professional Windows tech support sites and managers. These methods can be found on this page, where they will be gathered and showcased.

Just follow and see how to free upgrade Windows 10 from Home to Pro with ease now.

Part 1. Extend system C drive and fix existing errors on Windows PC

Before upgrading to Windows 10, it's recommended to free up enough space on your system C drive to accommodate the new Windows 10 ISO image files.
To avoid unexpected Windows 10 update issues, it's essential to remove bad sectors and unknown file system errors. A partition manager software can effectively extend the system C drive and repair bad sector errors, making it a necessary tool for maintaining a stable and up-to-date operating system.
Here you may try Qiling partition manager software for help:

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Extend system C drive:

Option 1. Extend System C drive with unallocated space

1. Click on the System C: drive and select "Resize/Move".
To resize the system partition, drag the end of the system partition into the unallocated space, effectively adding it to the C: drive. This will increase the size of the C: drive.
The user clicks "Proceed" to initiate the execution of the operations and expand the C drive.

Option 2. Extend System C drive without unallocated space

1. To resize or move a partition, click on the big partition with enough free space on the system disk, and select the "Resize/Move" option.
2. To free up space, drag the end of the big partition to the left to shrink it, making room for the unallocated space. Confirm the change by clicking "Proceed".
2. To resize or move the system drive, select it at the "Allocate Space From (*) To" section and choose the "Resize/Move" option.
2. To combine System C drive with the unallocated space, you can simply drag the end of System C drive into the unallocated space. This will expand the System C drive to include the newly allocated space, effectively merging the two into one larger drive.
3. Click "Proceed" to save the changes and extend the C drive.

Repair bad sectors/file system errors:

Step 1. Right-click the target partition that has a problem.

Step 2. Choose "Advanced" > "Check File System".

Step 3. In the Check File System window, check the "Fix the error on the disk" option.

Step 4. Click "Proceed" to check errors on your partition.

Best Data Recovery Software for Deleted Data Recovery

For Windows and Mac users, there are several effective data recovery software options available that can quickly retrieve deleted or lost data, making it easier to recover important files and information.

Part 2. Backup system and files before upgrade

To avoid potential data loss or system revert issues, it's highly recommended to backup your Windows 10 system and data before upgrading to the Pro edition. Using professional backup software like Qiling Backup can help you safely create a backup of your system and data, ensuring a smooth and hassle-free upgrade process.

Part 3. Free upgrade Windows 10 from Home to Pro edition

After Step 1 and Step 2, you can now upgrade Windows 10 from Home to Pro edition with either method offered below.

Method 1. Manually upgrade from Windows 10 Home to Pro by upgrading Windows Store

1. To update Windows, open the Windows Store, log in with your Microsoft Account, click on your account icon, and select "Download and Updates".
2. Select Store, click Update under Store;
Wait for the Windows Store update process to complete.
3. After the update, search "Windows 10" in the search box and click on it;
4. After this, click Install to upgrade your Windows 10 from Home to Pro edition.
5. Click Yes, let's go to confirm the upgrade process.

Upgrade Windows 10 from Home to Pro.

If the process is 100%, it means it's almost done and you'll need to restart your PC manually once you receive a "Succeed" message.

Windows 10 Home to Pro edition update.

6. To check if Windows 10 is activated, go to Settings > Update & security > Activation. If it's not activated, you can purchase a product key to activate it.

Method 2. Upgrade Windows 10 from Home to Pro edition without activation

1. Go to Settings > Update & security > Activation;

Update Windows 10 from Home to Pro edition without key.

2. To upgrade from the Home edition to the Pro edition, click on "Go to Store", then select "Upgrade to Pro".

Get Windows 10 Pro update access.

You don't have to pay for an activation key right now, you can buy it later after the upgrade process. You can also use a free trial version to test the software and then purchase the activation key if you decide to keep using it.

Update Windows 10 from Home to Pro without activation key.

3. Click Start upgrade when you see the features of Pro edition and click Yes, let's go to confirm.

Confirm to upgrade Windows 10 from Home to Pro.

4. Wait for the process complete at 100% and restart PC, then you'll get Windows 10 Pro edition upgraded and installed on your PC.

You can now use Windows 10 Pro on your PC, and you'll have a 30-day free trial period before needing to activate the system.

If you lost data after a Windows 10 upgrade, you can restore it from a backup image created before the upgrade. This is a straightforward solution to retrieve your lost data.
If you want to go back to the previous system, you can try Windows revert access to downgrade from Pro to Home edition or use system restore to revert from Windows 10 Pro to Home using a system image created by Qiling Backup.