— Activating Windows 10 — Why activate Windows 10? Although an unactivated copy of Windows 10 can be used for an extended period with most core features and applications functioning normally, there are still some limitations: -- A watermark saying "Activate Windows" may appear in the bottom-right corner of the desktop. -- You won’t be able to change your wallpaper, theme, or other personalization settings . -- Occasional pop-up reminders will prompt you to activate Windows. These limitations do not affect the system’s lifespan, security, or software functionality, but they may impact your overall user experience. When is it acceptable to use an unactivated version of Windows 10? -- For students, developers, or testers who frequently reinstall the system and prefer not to activate it each time. -- For virtual machines, backup computers, or temporary maintenance environments. -- For short-term use or evaluation purposes before deciding whether to activate. If you are satisfied with your current operating system and plan to use it long-term, we recommend activating Windows 10. Activation removes all restrictions, improves overall system stability, and ensures access to the full range of Microsoft’s support services. Check Activation Status Right-click on a blank area of the desktop and select Properties from the menu.

Your current activation status will be shown here. For example: If it says "Unable to reach Windows activation servers", it means the system is not yet activated. Disable Windows Defender Real-Time Protection Due to the nature of activation tools, they are often detected as threats by Windows Defender, and may be blocked or automatically deleted. To avoid this, you need to temporarily disable Windows Defender’s real-time protection before running the activation tool. Steps: 1. Open Control Panel.

5. Under “Virus protection”, click View in Windows Security. → This opens the “Virus & threat protection window”.

6. Find the “Virus & threat protection settings” section. → Click Manage settings to open the configuration page.

7. Turn off the following items one by one: -- Real-time protection → A UAC prompt may appear; click Yes to continue. -- Cloud-delivered protection -- Automatic sample submission -- Tamper Protection”

Note: Make sure to disable both “Real-time protection” and “Cloud-delivered protection”, or the activation tool may be deleted before it can run. Run Activation Tool 1. Open the system installation USB drive and navigate to the \HEU_KMS_Activator\ folder.

2. Double-click HEU_KMS_Activator_30.0.0 (HEU_KMS_Activator_30.0.0.exe) to run the program.

4. A Disclaimer window will appear on launch. Click Yes to proceed; otherwise, the program will close automatically.

5. In the main interface, click the plum blossom icon on the right to check the current activation status.

6. A message appears: “Windows 10 Pro License status: Notification Notification Reason: 0xC004F034” This indicates that Windows 10 Pro has not been activated; Click OK to close the status window.

7. Do not change any settings in the main interface. Leave everything as default, and click the Start button to begin activation. After a short moment, a message will appear.

8. Information displayed: “Windows 10 Pro License status: activated with KMS38 KMS38 protection successfully activated” This indicates that Windows 10 Pro has been activated; Click OK to complete the activation. Note: With the default settings, the system will be activated using the KMS38 method, valid until the year 2038. 9. Click the plum blossom icon again to verify that the system is now activated.

10. A message appears: “Windows 10 Pro License status: Licensed Period Remaining: 6643746 minutes(4613day)” This indicates that Windows 10 Pro has been activated. Click OK to close the status window, then close the activation tool. Verify Activation Status Below are two additional ways to verify the activation status: Method 1: Using the Command Line Press Win + R to open the Run dialog.

Type the following command and press Enter: slmgr.vbs –xpr

A pop-up window will display the activation status. For example: “Windows(R), Professional edition: Windows is activated until 1/18/2038 8:13:43 PM” Click OK to finish viewing. Method 2: Through the Properties Page (This method is the same as the one used earlier in the “Check Activation Status” section.)  Right-click on a blank area of the desktop and select Properties.  In the About page, scroll down.  Find and click Change product key or upgrade your edition of Windows.

The activation status will be shown, for example: -- “Windows is activated using your organization’s activation service” -- or “Windows is activated” Any of the above messages indicate that the system has been successfully activated. Restore Windows Defender Real-Time Protection After activation is complete, be sure to restore your system’s real-time protection features to ensure security. The steps are similar to those used for disabling protection, with some differences: 1. Open the Control Panel. 2. Click System and Security. 3. Click Security and Maintenance. 4. Expand the Security category.

(Note: Steps 5–7 differ slightly from the process used to disable protection.) 5. Under Virus protection, click View in Windows Security. → The page may redirect to the “Security providers” section (this differs from the disabling process). 6. As shown above, click the left-side icon to expand the menu (this step also differs).

8. Locate the “Virus & threat protection settings” section → Click Manage settings underneath to open the configuration page. 9. Re-enable the following items one by one: -- Real-time protection -- Cloud-delivered protection -- Automatic sample submission -- Tamper Protection

Summary HEU_KMS_Activator allows long-term activation of Windows 10 (until 2038). Make sure to disable Windows Defender real-time protection before activation to prevent the tool from being mistakenly deleted. After activation, re-enable real-time protection as soon as possible to ensure system security.