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Starting with Windows 10, version 1703 Windows 10 Pro supports the Subscription Activation feature, enabling users to “step-up” from Windows 10 Pro to Windows 10 Enterprise automatically if they are subscribed to Windows 10 Enterprise E3 or E5.

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With Windows 10, version 1903 the Subscription Activation feature also supports the ability to step-up from Windows 10 Pro Education to the Enterprise grade edition for educational institutions – Windows 10 Education.

The Subscription Activation feature eliminates the need to manually deploy Windows 10 Enterprise or Education images on each target device, then later standing up on-prem key management services such as KMS or MAK based activation, entering GVLKs, and subsequently rebooting client devices.

Subscription Activation for Windows 10 Enterprise

With Windows 10, version 1703 both Windows 10 Enterprise E3 and Windows 10 Enterprise E5 are available as online services via subscription. Deploying Windows 10 Enterprise in your organization can now be accomplished with no keys and no reboots.

If you are running Windows 10, version 1703 or later:

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  • Devices with a current Windows 10 Pro license can be seamlessly upgraded to Windows 10 Enterprise.
  • Product key-based Windows 10 Enterprise software licenses can be transitioned to Windows 10 Enterprise subscriptions.

Organizations that have an Enterprise agreement can also benefit from the new service, using traditional Active Directory-joined devices. In this scenario, the Active Directory user that signs in on their device must be synchronized with Azure AD using Azure AD Connect Sync.

Subscription Activation for Windows 10 Education

Subscription Activation for Education works the same as the Enterprise version, but in order to use Subscription Activation for Education, you must have a device running Windows 10 Pro Education, version 1903 or later and an active subscription plan with a Windows 10 Enterprise license. For more information, see the requirements section.

Summary

  • Inherited Activation: Description of a new feature available in Windows 10, version 1803 and later.
  • The evolution of Windows 10 deployment: A short history of Windows deployment.
  • Requirements: Prerequisites to use the Windows 10 Subscription Activation model.
  • Benefits: Advantages of Windows 10 subscription-based licensing.
  • How it works: A summary of the subscription-based licensing option.
  • Virtual Desktop Access (VDA): Enable Windows 10 Subscription Activation for VMs in the cloud.

For information on how to deploy Windows 10 Enterprise licenses, see Deploy Windows 10 Enterprise licenses.

Inherited Activation

Inherited Activation is a new feature available in Windows 10, version 1803 that allows Windows 10 virtual machines to inherit activation state from their Windows 10 host.

When a user with Windows 10 E3/E5 or A3/A5 license assigned creates a new Windows 10 virtual machine (VM) using a Windows 10 local host, the VM inherits the activation state from a host machine independent of whether user signs on with a local account or using an Azure Active Directory (AAD) account on a VM.

To support Inherited Activation, both the host computer and the VM must be running Windows 10, version 1803 or later.

The evolution of deployment

The original version of this section can be found at Changing between Windows SKUs.

The following figure illustrates how deploying Windows 10 has evolved with each release. With this release, deployment is automatic.

  • Windows 7 required you to redeploy the operating system using a full wipe-and-load process if you wanted to change from Windows 7 Professional to Windows 10 Enterprise.
  • Windows 8.1 added support for a Windows 8.1 Pro to Windows 8.1 Enterprise in-place upgrade (considered a “repair upgrade” because the OS version was the same before and after). This was a lot easier than wipe-and-load, but it was still time-consuming.
  • Windows 10, version 1507 added the ability to install a new product key using a provisioning package or using MDM to change the SKU. This required a reboot, which would install the new OS components, and took several minutes to complete. However, it was a lot quicker than in-place upgrade.
  • Windows 10, version 1607 made a big leap forward. Now you can just change the product key and the SKU instantly changes from Windows 10 Pro to Windows 10 Enterprise. In addition to provisioning packages and MDM, you can just inject a key using SLMGR.VBS (which injects the key into WMI), so it became trivial to do this using a command line.
  • Windows 10, version 1703 made this “step-up” from Windows 10 Pro to Windows 10 Enterprise automatic for those that subscribed to Windows 10 Enterprise E3 or E5 via the CSP program.
  • Windows 10, version 1709 adds support for Windows 10 Subscription Activation, very similar to the CSP support but for large enterprises, enabling the use of Azure AD for assigning licenses to users. When those users sign in on an AD or Azure AD-joined machine, it automatically steps up from Windows 10 Pro to Windows 10 Enterprise.
  • Windows 10, version 1803 updates Windows 10 Subscription Activation to enable pulling activation keys directly from firmware for devices that support firmware-embedded keys. It is no longer necessary to run a script to perform the activation step on Windows 10 Pro prior to activating Enterprise. For virtual machines and hosts running Windows 10, version 1803 Inherited Activation is also enabled.
  • Windows 10, version 1903 updates Windows 10 Subscription Activation to enable step up from Windows 10 Pro Education to Windows 10 Education for those with a qualifying Windows 10 or Microsoft 365 subscription.

Requirements

Windows 10 Enterprise requirements

Note

The following requirements do not apply to general Windows 10 activation on Azure. Azure activation requires a connection to Azure KMS only, and supports workgroup, Hybrid, and Azure AD-joined VMs. In most scenarios, activation of Azure VMs happens automatically. For more information, see Understanding Azure KMS endpoints for Windows product activation of Azure Virtual Machines.

For Microsoft customers with Enterprise Agreements (EA) or Microsoft Products & Services Agreements (MPSA), you must have the following:

  • Windows 10 (Pro or Enterprise) version 1703 or later installed on the devices to be upgraded.
  • Azure Active Directory (Azure AD) available for identity management.
  • Devices must be Azure AD-joined or Hybrid Azure AD joined. Workgroup-joined or Azure AD registered devices are not supported.

For Microsoft customers that do not have EA or MPSA, you can obtain Windows 10 Enterprise E3/E5 or A3/A5 through a cloud solution provider (CSP). Identity management and device requirements are the same when you use CSP to manage licenses, with the exception that Windows 10 Enterprise E3 is also available through CSP to devices running Windows 10, version 1607. For more information about obtaining Windows 10 Enterprise E3 through your CSP, see Windows 10 Enterprise E3 in CSP.

If devices are running Windows 7 or Windows 8.1, see New Windows 10 upgrade benefits for Windows Cloud Subscriptions in CSP

Multi-factor authentication

An issue has been identified with Hybrid Azure AD joined devices that have enabled multi-factor authentication (MFA). If a user signs into a device using their Active Directory account and MFA is enabled, the device will not successfully upgrade to their Windows Enterprise subscription.

To resolve this issue:

If the device is running Windows 10, version 1703, 1709, or 1803, the user must either sign in with an Azure AD account, or you must disable MFA for this user during the 30-day polling period and renewal.

If the device is running Windows 10, version 1809 or later:

  1. Windows 10, version 1809 must be updated with KB4497934. Later versions of Windows 10 automatically include this patch.
  2. When the user signs in on a Hybrid Azure AD joined device with MFA enabled, a notification will indicate that there is a problem. Click the notification and then click Fix now to step through the subscription activation process. See the example below:


Windows 10 Education requirements

  1. Windows 10 Pro Education, version 1903 or later installed on the devices to be upgraded.
  2. A device with a Windows 10 Pro Education digital license. You can confirm this information in Settings > Update & Security > Activation.
  3. The Education tenant must have an active subscription to Microsoft 365 with a Windows 10 Enterprise license or a Windows 10 Enterprise or Education subscription.
  4. Devices must be Azure AD-joined or Hybrid Azure AD joined. Workgroup-joined or Azure AD registered devices are not supported.

If Windows 10 Pro is converted to Windows 10 Pro Education using benefits available in Store for Education, then the feature will not work. You will need to re-image the device using a Windows 10 Pro Education edition.

Benefits

With Windows 10 Enterprise or Windows 10 Education, businesses and institutions can benefit from enterprise-level security and control. Previously, only organizations with a Microsoft Volume Licensing Agreement could deploy Windows 10 Education or Windows 10 Enterprise to their users. Now, with Windows 10 Enterprise E3 or A3 and E5 or A5 being available as a true online service, it is available in select channels thus allowing all organizations to take advantage of enterprise-grade Windows 10 features. To compare Windows 10 editions and review pricing, see the following:

You can benefit by moving to Windows as an online service in the following ways:

  1. Licenses for Windows 10 Enterprise and Education are checked based on Azure Active Directory (Azure AD) credentials, so now businesses have a systematic way to assign licenses to end users and groups in their organization.
  2. User logon triggers a silent edition upgrade, with no reboot required
  3. Support for mobile worker/BYOD activation; transition away from on-prem KMS and MAK keys.
  4. Compliance support via seat assignment.
  5. Licenses can be updated to different users dynamically, enabling you to optimize your licensing investment against changing needs.

How it works

The device is AAD joined from Settings > Accounts > Access work or school.

The IT administrator assigns Windows 10 Enterprise to a user. See the following figure.

When a licensed user signs in to a device that meets requirements using their Azure AD credentials, the operating system steps up from Windows 10 Pro to Windows 10 Enterprise (or Windows 10 Pro Education to Windows 10 Education) and all the appropriate Windows 10 Enterprise/Education features are unlocked. When a user’s subscription expires or is transferred to another user, the device reverts seamlessly to Windows 10 Pro / Windows 10 Pro Education edition, once current subscription validity expires.

Devices running Windows 10 Pro, version 1703 or Windows 10 Pro Education, version 1903 or later can get Windows 10 Enterprise or Education Semi-Annual Channel on up to five devices for each user covered by the license. This benefit does not include Long Term Servicing Channel.

The following figures summarize how the Subscription Activation model works:

Before Windows 10, version 1903:

After Windows 10, version 1903:

Note:

  1. A Windows 10 Pro Education device will only step up to Windows 10 Education edition when “Windows 10 Enterprise” license is assigned from M365 Admin center (as of May 2019).
  2. A Windows 10 Pro device will only step up to Windows 10 Enterprise edition when “Windows 10 Enterprise” license is assigned from M365 Admin center (as of May 2019).

Scenarios

Scenario #1: You are using Windows 10, version 1803 or above, and just purchased Windows 10 Enterprise E3 or E5 subscriptions (or have had an E3 or E5 subscription for a while but haven’t yet deployed Windows 10 Enterprise).

All of your Windows 10 Pro devices will step-up to Windows 10 Enterprise, and devices that are already running Windows 10 Enterprise will migrate from KMS or MAK activated Enterprise edition to Subscription activated Enterprise edition when a Subscription Activation-enabled user signs in to the device.

Scenario #2: You are using Windows 10, version 1607, 1703, or 1709 with KMS for activation, and just purchased Windows 10 Enterprise E3 or E5 subscriptions (or have had an E3 or E5 subscription for a while but haven’t yet deployed Windows 10 Enterprise).

To change all of your Windows 10 Pro devices to Windows 10 Enterprise, run the following command on each computer:

The command causes the OS to change to Windows 10 Enterprise and then seek out the KMS server to reactivate. This key comes from Appendix A: KMS Client Setup Keys in the Volume Activation guide. It is also possible to inject the Windows 10 Pro key from this article if you wish to step back down from Enterprise to Pro.

Scenario #3: Using Azure AD-joined devices or Active Directory-joined devices running Windows 10 1709 or later, and with Azure AD synchronization configured, just follow the steps in Deploy Windows 10 Enterprise licenses to acquire a $0 SKU and get a new Windows 10 Enterprise E3 or E5 license in Azure AD. Then, assign that license to all of your Azure AD users. These can be AD-synced accounts. The device will automatically change from Windows 10 Pro to Windows 10 Enterprise when that user signs in.

In summary, if you have a Windows 10 Enterprise E3 or E5 subscription, but are still running Windows 10 Pro, it’s really simple (and quick) to move to Windows 10 Enterprise using one of the scenarios above.

If you’re running Windows 7, it can be more work. A wipe-and-load approach works, but it is likely to be easier to upgrade from Windows 7 Pro directly to Windows 10 Enterprise. This is a supported path, and completes the move in one step. This method also works if you are running Windows 8.1 Pro.

Licenses

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The following policies apply to acquisition and renewal of licenses on devices:

  • Devices that have been upgraded will attempt to renew licenses about every 30 days, and must be connected to the Internet to successfully acquire or renew a license.
  • If a device is disconnected from the Internet until its current subscription expires, the operating system will revert to Windows 10 Pro or Windows 10 Pro Education. As soon as the device is connected to the Internet again, the license will automatically renew.
  • Up to five devices can be upgraded for each user license.
  • If a device meets the requirements and a licensed user signs in on that device, it will be upgraded.

Licenses can be reallocated from one user to another user, allowing you to optimize your licensing investment against changing needs.

When you have the required Azure AD subscription, group-based licensing is the preferred method to assign Enterprise E3 and E5 licenses to users. For more information, see Group-based licensing basics in Azure AD.

Existing Enterprise deployments

If you are running Windows 10, version 1803 or later, Subscription Activation will automatically pull the firmware-embedded Windows 10 activation key and activate the underlying Pro License. The license will then step-up to Windows 10 Enterprise using Subscription Activation. This automatically migrates your devices from KMS or MAK activated Enterprise to Subscription activated Enterprise.

Caution: Firmware-embedded Windows 10 activation happens automatically only when we go through OOBE(Out Of Box Experience)

If you are using Windows 10, version 1607, 1703, or 1709 and have already deployed Windows 10 Enterprise, but you want to move away from depending on KMS servers and MAK keys for Windows client machines, you can seamlessly transition as long as the computer has been activated with a firmware-embedded Windows 10 Pro product key.

If the computer has never been activated with a Pro key, run the following script. Copy the text below into a .cmd file and run the file from an elevated command prompt:

Obtaining an Azure AD license

Enterprise Agreement/Software Assurance (EA/SA):

  • Organizations with a traditional EA must order a $0 SKU, process e-mails sent to the license administrator for the company, and assign licenses using Azure AD (ideally to groups using the new Azure AD Premium feature for group assignment). For more information, see Enabling Subscription Activation with an existing EA.
  • The license administrator can assign seats to Azure AD users with the same process that is used for O365.
  • New EA/SA Windows Enterprise customers can acquire both an SA subscription and an associated $0 cloud subscription.

Microsoft Products & Services Agreements (MPSA):

  • Organizations with MPSA are automatically emailed the details of the new service. They must take steps to process the instructions.
  • Existing MPSA customers will receive service activation emails that allow their customer administrator to assign users to the service.
  • New MPSA customers who purchase the Software Subscription Windows Enterprise E3 and E5 will be enabled for both the traditional key-based and new subscriptions activation method.

Deploying licenses

See Deploy Windows 10 Enterprise licenses.

Virtual Desktop Access (VDA)

Subscriptions to Windows 10 Enterprise are also available for virtualized clients. Windows 10 Enterprise E3 and E5 are available for Virtual Desktop Access (VDA) in Windows Azure or in another qualified multitenant hoster.

Virtual machines (VMs) must be configured to enable Windows 10 Enterprise subscriptions for VDA. Active Directory-joined and Azure Active Directory-joined clients are supported. See Enable VDA for Subscription Activation.

Related topics

Connect domain-joined devices to Azure AD for Windows 10 experiences
Compare Windows 10 editions
Windows for business

Summary :

When encountering the Windows activation error, you must want to know how to fix it easily. In this post, I’ll summarize some common Windows activation errors and provide useful solutions to fixing them. Additionally, explanations for what happens when Windows is not activated and why your Microsoft product key is not working will be offered.

Quick Navigation :

What does activation mean? To be specific, Windows activation is used to:

  • Verify whether your copy of Windows is genuine or not.
  • Detect whether the number of devices running this copy exceeds the limit that Microsoft Software License Terms allow or not.

After installing a Windows system, you’ll be asked to finish the activation process: find out if your operating system (OS) is activated and linked to your Microsoft account. To be honest, linking the digital license to Microsoft account is crucial. Why? It is because this will allow you to reactivate Windows via Activation troubleshooter when important hardware change is made.

The Windows activation error occurs frequently to stop users from activating Windows successfully. Why did this happen? How to fix windows activation error? What happens if Windows is not activated? Questions like these will be answered in the following content.

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.

Windows Activation Error 0xC004C003

The most possible causes of error code 0xC004C003 are Windows 10 upgrade and fresh install. It’s easy to run into 0xC004C003 error while you are trying to activate Windows.

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  • 0xC004C003 Windows 10 not activated after upgrade: this error may occur when you haven’t finished Windows 10 upgrade correctly. Performing an in-place upgrade is an easy fix on this occasion.
  • Microsoft error code 0xC004C003: this error could be caused if the activation server is busy. The solution to fix it in this case is very easy: just wait for a while (maybe a couple of hours) and try to activate Windows 10 again.
  • 0xC004C003after hardware change: a hardware change could also lead to 0xC004C003 error code. Please contact Microsoft ASAP if you are suffering from this.
  • 0xC004C003Windows 10 product key not working: you’ll see this if your digital license or product key isn’t valid. Please make sure you have a genuine copy of Windows. (This copy of Windows is not genuine.)

Here are some useful solutions to fixing error 0xC004C003.

Solution 1: make sure you upgrade to Windows 10 using Windows Update.

Windows Update should be your first choice if you’d like to upgrade Windows 7 or Windows 8.1 to Windows 10.

Advantages of upgrading using Windows Update:

  • It will convert your valid license key to a Digital entitlement.
  • You’ll be allowed to reinstall Windows 10 on your PC when necessary, without using a product key.

3 steps to upgrade OS via Windows Update:

  1. Reinstall your previous Windows version.
  2. Make sure the version is activated.
  3. Navigate to Windows Update and follow the instructions to finish the upgrade.
Tip: Some users reported that some of their files are lost after Windows Update. MiniTool Power Data Recovery could help you.

Solution 2: 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.

  1. Revert to the previous version of Windows.
  2. Make sure which updates are necessary for the upgrade of Windows 10 and install them all.
  3. Check whether the current version is fully activated or not.
  4. Get Media Creation Tool and run it.
  5. Choose Upgrade this PC now. Then, click Next.
  6. Select Download and install updates. (This step is not mandatory, so you can skip according to needs.)
  7. Wait for the download and check process to finish.
  8. Select Change what to keep and decide the files you want.
  9. Click Next and Install.
  10. Wait patiently.

Solution 3: execute slmgr.vbs command.

You may be unable to reach the Windows activation servers since there are too many Windows 7 and 8.1 users are upgrading their OS to Windows 10. The activation servers will refuse the connection when they get overloaded.

As mentioned earlier, you can wait for a couple of hours and then try to activate your system again. Alternatively, you can force Windows 10 to activate by following these steps:

  1. Click on the Cortana search box on the taskbar. (What if taskbar is not working?)
  2. Type cmd into it.
  3. Right click on the Command Prompt app and select Run as administrator.
  4. Type vbs –rearm into the Command Prompt window and press Enter.
  5. Wait a few minutes for the command to execute.
  6. Reboot your PC.
Note: Please be advised that you may encounter the Windows Script Host access is disabled error after hitting Enter. In this case, you should fix the Windows Script Host error and then try to execute slmgr.vbs –rearm again.

Additionally, you can try to activate Windows 10 by:

  • Contacting Microsoft after a hardware change
  • Checking your product key to make sure it's valid
  • Checking the Internet connection
  • Updating BIOS

If you find your PC not booting after BIOS update but don’t know how to deal with it, please read this page:

Many people point out the same problem - PC not booting after BIOS update. Here, I’d like to share the recovery and repair solutions to it.

Windows Activation Error 0xC004F074

You may encounter the 0xC004F074 error after you have finished upgrading your system to Windows 10.

  • The 0xC004F074 error will appear whenever the Key Management Service (KMS) fails to be contacted during the activation process.
  • The Windows 10 KMS error code may also occur after you have downloaded a compromised Windows upgrade from the pirated software websites. (This could be very dangerous; I advise you to update from the authorized sites only.)

Here are some useful solutions to fixing Windows 10 activation error 0xC004F074.

Solution 1: activate by phone.

  1. Hold Start + I buttons to open Settings.
  2. Navigate to Update & Security and click on it.
  3. Select Activation in the left panel.
  4. Choose to Activate by phone.
  5. Start Product Activation Wizard.
  6. Open the menu and select Settings.
  7. Choose Change PC Settings.
  8. Click Activate Windows.
  9. Choose options like Activate, Activate by phone or Contact customer support for help.
  10. Follow the instructions to activate your Windows by using the phone.

Solution 2: run System File Checker.

  1. Run Command Prompt as administrator (the method is introduced in the previous section).
  2. Type sfc/scannow command and hit Enter.
  3. Wait for the SFC scan to finish.
  4. Reboot your Windows device.

Solution 3: run Slui 3 command.

  1. Hold Start + R buttons to open Run.
  2. Input Slui 3 into the textbox and hit OK.
  3. Write in your product key (Windows 10 activation key,) and hit Next.
  4. Click on the Activate button.
  5. Restart your device.

That’s how to activate Windows 10 in settings.

Solution 4: run Troubleshooters.

  1. Open Settings window (refer to solution 1 in this section).
  2. Choose Update & Security.
  3. Shift to Troubleshoot in the left panel.
  4. Select Windows Update in the right panel.
  5. Hit Run the troubleshooter and wait.
  6. Check if the activation error occurs again.
Reminder

If the problem persists, please run Activation Troubleshooter as well:

  1. Repeat step 1 and step 2.
  2. Shift to Activation in the left panel.
  3. Click on the Troubleshoot button under Activate Windows now section in the right panel.
  4. Wait for the troubleshooting process to finish.
  5. Reboot your device to see whether the error occurs or not.

Additionally, you can try solution 3: execute slmgr.vbs command (mentioned in error 0xC004C003 part) or contact Microsoft Support for help.

Popular Windows Activation Errors

One: Windows activation error 0xC004F050.

There are many causes of this error:

  • The activation servers are busy.
  • The license is not signed properly.
  • The license validity interval was expired (the product key is invalid).
  • Windows isn’t upgrade after a reinstall if you are using the free upgrade offer.

Two: Windows activation error 0x803F7001.

Causes of this error:

  • The device doesn’t have a valid digital entitlement.
  • You performed hardware upgrade or replaced a piece of hardware in your computer.
  • The Slui 4 responsible for activating Windows is not working on Windows 10.

Three: Windows 10 activation error 0x8007007B.

The most possible reason for causing this error is the activation servers are being overwhelmed since there are too many upgrades. You may see 0x8007007B in the following error messages:

  • Activation Error: Code 0x8007007B.
  • Windows 10 Activation error 0x8007007B.
  • Windows can’t activate right now. 0x8007007B.
  • A problem occurred when Windows tried to activate. Error Code 0x8007007B.
  • Contact your system administrator to get a product key. Error code: 0x8007007B.
  • Error code 0x8007007B. The filename, directory name or volume label syntax is incorrect.

Four: 0x80072F8F Windows 10.

There are three easy ways to fix 0x80072F8F error.

Way 1: fix date and time (you have to make sure the settings of Date and Time are correct on your PC).

  1. Press Start + I buttons.
  2. Select Time & Language. Then, Data & time will be selected by default.
  3. Find Set time automatically and Set time zone automatically options in the right side panel; turn the toggles of them to On.
  4. Shift to Region & language option in the left side panel.
  5. Look at the Country or region section and make sure the country selected is where you live.
  6. Close Settings app and restart your PC.

Way 2: modify MediaBootInstall in Registry Editor.

  1. Press Start + R to open Run.
  2. Type in regedit and hit Enter (you can also click on the OK button).
  3. Navigate to this path: HKEY_LOCAL_MACHINE/Software/Microsoft/Windows/CurrentVersion/Setup/OOBE.
  4. Find MediaBootInstall in the right side panel and change the value to 0.
  5. Close Registry Editor and reboot computer.
  6. Open Command Prompt.
  7. Type slmgr /rearm and hit Enter.
  8. Wait for the operation to complete.
  9. Reboot the computer again.

Way 3: contact Microsoft support.

In addition to the Windows Activation, the 0x80072F8F error code will also appear in Windows Update and Microsoft Store. Definitely, there are many other errors that may occur during the Windows activation process.

Please get help with Windows activation errors by looking at this page, which lists more errors and the solutions to fix them.

Please note: you can use the MiniTool Partition Wizard to manage disks, partitions, and files reasonably. Besides, it can help you fix some disk errors quickly.

What Happens When Windows Is Not Activated

Windows XP

It was the first operating system on which Windows activation is required. If you ignore the activation process for 30 days, the system will stop you from using Windows anymore. You can do no more than system boot, make backups (the professional backup software you need), and activate.

If you see GPT protective partition on Windows XP, here’s your way out:

Solutions to getting access to GPT Protective Partition and recovering data from it are provided here for all users.

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Windows Vista

  • If you ignore the activation message for 30 days, the system will shift to Reduced Functionality Mode (RFM).
  • You’re not able to access advanced features like ReadyBoost or BitLocker (BitLocker drive encryption recovery).
  • Meanwhile, you are not allowed to play any Windows games.
  • What's more, you’ll be logged out of the system automatically after one hour of use.

Window 7

  • The Windows 7 activation error: Activate Windows Online Now will be kept in the system tray.
  • From day four through day 27, the Activate Now message will show up every day.
  • From day 28 to 30, the message will appear every four hours.
  • After day 30, you will get the Activate Now message every hour, and you’ll see a notice saying that your Windows version is not genuine each time you launch the Control Panel.

Windows 8

  • An Action Center tooltip will appear in the Desktop Mode if you didn’t activate Windows 8; you can ignore it.
  • The activation message will appear every time when you open the PC Settings screen.
  • The Personalize section (including lock screen wallpaper & apps, start screen color & background, and account picture) in settings will be disabled. You’ll see the message: You need to activate Windows before you can personalize your PC.
  • A full-screen activation request will occur every couple of hours.

Windows 10

Windows is not activated Windows 10 pro.

  • A watermark will show up in the bottom-right corner of your screen if you didn't finish the activation process.
  • The Windows isn’t activated. Activate Windows now link will be provided for you at the bottom of the Settings app.
  • You’re not allowed to change your desktop wallpaper in the Settings app. Also, you’ll see the message: You need to activate Windows before you can personalize your PC.

Warm Reminder

Desktop Reminder Pro Activation Key Generator

The Windows activation error is a common problem for Windows users. It often occurs if you haven’t finished activating your Windows or didn’t start the activation process at all. Additionally, you’ll also need to activate Windows when Your Windows License Will Expire Soon.

It is highly recommended that you activate your copy of Windows quickly by using corresponding methods. If you keep ignoring the activation prompts, you’ll be bothered by the activation error messages all the time; what’s worse, you are not able to enjoy the full performance of your Windows computer.

Pro

Windows Activation Error FAQ

The error code 0xc004C003 is closely related to the Windows activation process. When it occurs on your computer, it means the specified product key is actually in use. The root reason for causing this is: the certain MAK has been blocked on the activation server.

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The error code 0xC004F074 means that the Key Management Service (KMS) on your device could not be contacted while activation is in progress. You will get this error whenever Windows is unable to reach the specific activation service/system administrator; it will also occur when KMS is unavailable.
???? What will happen if I don't activate my Windows 10?

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If you don’t active the Windows 10, you can still use most of the features in it. Luckily, there are not many restrictions. The most obvious difference between an activated Windows 10 and an unactivated one is: Windows will ask you to complete the activation now and then.

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???? How long can you use Windows 10 without activation?
In fact, you are allowed to use Windows 10 on your computer for one month; during this period of time, it doesn't have any restrictions. When the time is up, the restrictions will take up and you will see some notifications like Activate Windows now.