About Genuine Windows

Support for Windows 7 ended on January 14, 2020

We recommend you move to a Windows 10 PC to continue to receive security updates from Microsoft.

Genuine versions of Windows are published by Microsoft, properly licensed, and supported by Microsoft or a trusted partner. You’ll need a genuine version of Windows to access the optional updates and downloads that help you get the most from your PC.

To learn how to activate Windows, see Activate Windows 7 or Windows 8.1. If you’re using Windows 10, see Activation in Windows 10.

Here are answers to some common questions about genuine Windows software.

Look for key features of genuine Windows software, such as the Certificate of Authenticity (COA), a proof of license label, and an edge-to-edge hologram. For more information, visit the What to look for page on the Microsoft How to Tell website. Your safest option is always to buy Windows from Microsoft, or to buy a PC with Windows preinstalled directly from Microsoft or a store you know and trust.

If you’re seeing these notifications, it’s likely that your copy of Windows wasn’t properly activated. Click the notification and follow the steps to repair Windows or buy a genuine version of Windows if you find out the software is counterfeit.

Until you correct the issue, you’ll receive periodic reminders that Windows is not genuine. Your desktop may also turn black to emphasize the messages. You can reset it, but it will return to black every 60 minutes until the issue is resolved.

Windows will always be able to get critical security updates, even if your version isn’t genuine. However, other updates and benefits are available exclusively for genuine Windows software.

Activation helps verify that your copy of Windows is used only on PCs that the Microsoft Software License Terms allow. It pairs your product key or digital entitlement with your hardware configuration. Usually, you only need to activate Windows once, unless you make a significant hardware change.

When your PC downloads updates, Windows checks to see if your product key or digital entitlement is valid. If it is, you’re eligible to receive the latest updates from Microsoft. If it’s not, your PC is running non-genuine Windows.

You can’t install Windows on more PCs than the Microsoft Software License Terms allow. Usually, a copy of Windows can only be installed on one PC. To learn more about licensing Windows on more than one PC, go to the Microsoft Volume Licensing website.

Yes. You’ll still be able to get critical security updates. However, many updates are exclusively for customers with genuine versions of Windows. We strongly recommend that you get genuine Microsoft software immediately to keep you safer while using your PC.

Validation is an online process. It verifies that your copy of Windows is genuine and that critical Windows licensing files haven’t been damaged, deleted, or removed. It takes only a few moments and lets Microsoft create a match between your PC’s hardware profile and your 25-character product key or digital entitlement.

Your copy of Windows may need to be validated before you can get downloads and the updates which are reserved for PCs that are running genuine Windows. Windows might also prompt you to run genuine validation if activation isn’t properly completed.

If your copy of Windows fails validation, you’ll see a results page that tells you why it isn’t genuine. You’ll also see info about how to resolve the issue.

There are a few common scenarios in which Windows running on a PC might be discovered to be non-genuine during validation.

Repairs. If your PC has been repaired, you might start to see messages on your desktop that Windows isn’t genuine. If the repairs required Windows to be reinstalled, the technician may have activated Windows with a different key than you used when it was originally installed. You might not see the messages until you try to download something from the Microsoft Download Center that requires validation, and validation fails. To fix the issue, you can properly activate Windows by reentering your original product key.

For other issues, you may need to buy a genuine version of Windows.

1 License = 1 PC. Another common cause of Windows validation failure happens when you try to install Windows on more PCs than your license allows. For instance, if you purchased a copy of Windows and installed it on more than one PC, online validation might fail because the product key has already been used on another PC. The rule for most copies of Windows is that only one copy of Windows can be installed on one PC. To learn about licensing more than one PC, go to the Microsoft Volume Licensing website.

Counterfeit software. Validation will also fail if you’ve inadvertently acquired and installed counterfeit Windows software. The Microsoft How to Tell website can help you identify counterfeit software and file a counterfeit software report if needed. Validation failure is common for versions of Windows that were purchased from an online auction site, or if Windows was on a used PC that you purchased. Remember to ask the seller for the Certificate of Authenticity and the original Windows disc, if there was one.

To file a counterfeit report, go to the Microsoft How to Tell website.

You can file an online report if you inadvertently bought or received counterfeit software, or have information about a person, business, or online site that might be selling counterfeit software. The report you submit will be treated as confidential. Microsoft devotes substantial time and energy to fighting software counterfeiting, and you can be assured that we will take appropriate action in response to your report.

If you got an error when you were activating Windows, you can find what it means. For details, go to Get help with activation errors.

You’ll need a product key when you install Windows. To learn more, go to Find a product key.

Find your Windows product key

A Windows product key is a 25-character code used to activate Windows. It looks like this:

PRODUCT KEY: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX

Locate your product key for Windows 10

Depending on how you got your copy of Windows 10, you’ll need either a 25-character product key or a digital license to activate it. A digital license (called a digital entitlement in Windows 10, Version 1511) is a method of activation in Windows 10 that doesn’t require you to enter a product key. Without one of these, you won’t be able to activate your device.

Where to find your product key depends on how you got your copy of Windows.

Select any of the following to see more information:

The product key is preinstalled on your PC, included with the packaging the PC came in, or included on the Certificate of Authenticity (COA) attached to the PC. For more info, contact your hardware manufacturer, and for pictures of authentic product keys and COA labels, see How to tell your hardware is genuine.

The product key is on a label or card inside the box that Windows came in. For more info, contact the retailer that sold you Windows 10. How to tell your software is genuine.

Find your product key in the confirmation email you received after buying Windows 10 or in a digital locker accessible through the retailer’s website.

The product key is in the confirmation email you received after buying your digital copy of Windows. Microsoft only keeps a record of product keys if you purchased from the Microsoft online store. You can find out if you purchased from Microsoft in your Microsoft account Order history.

If you upgraded to Windows 10 for free from Windows 7 or Windows 8.1, you should have a digital license instead of a product key.

If you bought Windows 10 Home, Professional, or Upgrade to Pro in the Windows 10 Store app, you’ll receive a digital license instead of a product key. You can use the digital license for activation.

If your product key is scratched, blurred, or otherwise unusable, contact the retailer who sold you the product. If you aren’t able to get help from your retailer or have already tried and couldn’t get a working key, call Microsoft Support.

For more information about digital licenses and product keys in Windows 10, see the “Methods of Activation” section in Activate Windows 10.

Locate your product key for Windows 7 or Windows 8.1

A product key is usually required when uninstalling or reinstalling Windows 7 or Windows 8.1. Generally, if you bought a physical copy of Windows, the product key should be on a label or card inside the box that Windows came in. If Windows came preinstalled on your PC, the product key should appear on a sticker on your device. If you’ve lost or can’t find the product key, contact the manufacturer. To ensure your product key is genuine, see How to tell your software is genuine and How to tell your hardware is genuine.

Related links

For info about how to tell if your copy of Windows is genuine Microsoft software, see the How to tell page.

For more Windows 10 download info, see Download Windows 10.

If you need installation media to install or reinstall Windows, see Create installation media for Windows to learn how to create your own installation media using either a USB flash drive or a DVD.

If you need more help with activation, see Activate Windows 10.

If you’re getting an activation error, see Get help with Windows activation errors.

If you’re reinstalling Windows 10, you might not need a Windows product key. See Activation in Windows 10 for more info.

If you’re reinstalling Windows 10 due to a motherboard problem or some other hardware issue, see Reactivating Windows 10 after a hardware change.

If you’re looking for product keys for Office, apps, games, and more, see Find your Microsoft downloads and product keys

Announcing Windows 10 Insider Preview Build 21354

Hello Windows Insiders, today we are releasing Windows 10 Insider Preview Build 21354 to Windows Insiders in the Dev Channel.

Starting with today’s build, Windows Insiders will notice that the name of the branch we are releasing builds as shown on the desktop watermark at the lower right of the desktop from has changed to CO_RELEASE. Just like we did back in October when we released builds from the FE_RELEASE branch, we can change which branch we flight builds from. As our engineers work in development cycles internally, we may prioritize work being done in a specific branch and may need to move Insiders between branches. We are treating these builds the same as we would treat builds from the RS_PRERELEASE branch.

What’s new in Build 21354

New personalization options for news and interests on the taskbar

Thanks for your continued feedback for news and interests on the Windows taskbar! We’re continuing to develop the experience based on your suggestions. Today, we’re pleased to announce a new set of features rolling out for personalizing the feed to suit your interests.

Now, when you hover on the weather on your taskbar, you’ll see a new “Manage interests” button appear at the top of the window. This button links to a new full-page personalization experience, where you can choose the topics that you’re interested in. New users may also see a personalization card in their feed to help them get started.

Use the search box at the top of the “My interests” page to search for the topics or publishers you want to follow. You can also discover interests by browsing over a dozen categories, including different types of news, entertainment, and sports topics. When you select a topic to follow, you’ll see more stories about it in your feed as stories become available. You can manage the topics you’re following by selecting “Followed interests” in the left navigation.

We’re also excited to announce, “Tune your feed”, available from the left navigation on the “My interests” page. This experience makes it easy to explore and follow publishers from our partner ecosystem and select example articles that pique your interest. Select a couple of publishers and stories to get started or scroll to see more. You can see and manage the publishers you’re following by clicking “Followed Publishers” on the left navigation. You can also tune your feed wherever you see a story. Click the “X” on the top right of the card to remove the article and provide feedback: “Not interested in this story”, “Don’t like the source”, or “Report an issue”. We’ve refined this experience based on user feedback, to give you another way to fine-tune your feed for your preferences.

These new personalization experiences are now available in several markets, including the U.S., U.K., Canada, India, and Australia, with global rollout continuing. We look forward to hearing what you think about these new options for personalizing news and interests!

Reminder: We continue to roll out news and interests to Windows Insiders, so it isn’t available to everyone in the Dev Channel just yet.

Improvements to Display Settings

Content adaptive brightness control (CABC) disabling: CABC helps improve battery performance on PCs, but with the trade-off of decreased image quality. It can result in distracting brightness changes that interfere in experiences where image quality is of high importance such as for creative professionals looking for color accuracy. The ability to turn CABC off has been a highly requested feature and Windows Insiders can now disable CABC directly in the Display settings via Settings > System > Display.

Note: Depending on your device, you may see just one (or both) of the checkboxes seen under the brightness slider below. To find out if your device has CABC support, you can look at your GPU control panel.

HDR certification: To bring awareness to high quality HDR displays and educate customers, we are bringing HDR certification to Settings > System > Display under “Advanced display settings” with the latest Insider Preview builds. Under this settings page, a display’s HDR certifications will be shown.

We will be rolling out this feature over time and are starting with select Dolby Vision and VESA DisplayHDR models, so please don’t be alarmed if in the Advanced display settings, you see that your display has no HDR certification even though it is certified.

New Camera Settings page

We are extremely excited to introduce a new Camera Settings page we’ve been working on, giving users the ability to add/remove cameras and configure the default image settings of each one.

This page allows you to manage cameras through the Settings app, whether they’re connected directly to the device (like a webcam) or are ONVIF IP cameras on your local network (for more info on ONVIF support in Windows, see this blog post). This new Settings page can be found at Settings > Devices > Camera. Each camera has a “Configure” button that lets you make changes to the default brightness and contrast – letting you get rid of the pesky backlight that always shadows your face in your video calls. Depending on what features are supported by your camera, you can configure brightness and contrast, enable Video HDR or Eye Contact, or correct for camera rotation.

We look forward to hearing your feedback about this new feature. Please try out the Configure default image settings for your camera Quest on Feedback Hub and then send us your feedback at the end – we’d love to hear what other features you’d like to see, and if you run into any issues with your specific PC, camera and/or video app.

Inbox app updates

MSPaint is now updated via the Microsoft Store:

MSPaint is now updateable via the Microsoft Store outside major OS updates. It also has a new icon and has been promoted out of the Windows Accessories folder to its own place in the Start menu.

Snipping Tool is now updated via the Microsoft Store:

Snipping Tool is now updateable via the Microsoft Store outside major OS updates. It has been packaged together with Snip & Sketch so we can deliver updates for both at the same time. It has also been promoted out of the Windows Accessories folder to its own place in the Start menu.

NOTE: Because we’re combining both Snip & Sketch and Snipping Tool, Insiders who previously did not have Snip & Sketch installed will see Snipping Tool removed after updating to this build and will have to go and install Snip & Sketch from the Store to get it back.

Organizing all the admin and system tools under Windows Tools:

In Build 21343, we announced we changed the name of the Windows Administrative Tools folder in Start to Windows Tools as part of an effort to better organize all the admin and system tools in Windows 10. In Build 21354, we are continuing that effort. The Windows Accessories, Windows Administrative Tools, Windows PowerShell, and Windows System folders have now been removed from Start and the apps within these folders can now be accessed via the Windows Tools entry point that directs to the full apps list in File Explorer. All these apps will still appear in via search, launch via any method, can be pinned to Start or taskbar, and any customized shortcuts in the folder paths will remain intact. Also, File Explorer has been moved into its own place in the Start menu as part of this work.

Changes and Improvements

• [News and interests] As mentioned previously, we have enabled the ability to deselect “Open on hover” in the “News and interests” taskbar options. This is based on your feedback.
• The default path to access Linux files from Windows using the Windows Subsystem for Linux has been changed from `\\wsl\\` to `\\wsl.localhost\\` to improve performance and reliability. You will still be able to access Linux files using `\\wsl$\\`.
• Under Settings > Update & Security > Change active hours, you will find the toggle turned on for “Automatically adjust active hours for this device based on activity”, if you have never adjusted this feature. We are starting a roll out a change for Insiders that makes this setting on by default. With this setting turned on, Windows Update will be able to schedule automatic restarts when you are typically not using your device more accurately.
• As of the latest versions of Microsoft Edge, all pinned sites (regardless of what version you were using when you pinned them), should now use the taskbar behavior described here without you first having to unpin and re-pin the site.
• On ARM64 devices, you can now toggle compatibility settings for x64 applications.
• Under Settings > Personalization > Device usage, you can select all the ways you plan to use your device to get customized suggestions for tips, tools, and services.

Fixes

• [Gaming] We fixed an issuewhere certain games may crash, will not sync save data when a game is played on a different device, or will not save when a new game is installed.
• [File Explorer] We fixed an issue resulting in all folders pinned to Quick Access in File Explorer disappearing if you installed Build 21343. Please note that this fix prevents the issue from occurring going forward, it will not bring back the ones that were unpinned if you installed the impacted build previously.
• [File Explorer] We fixed an issue resulting in some Insiders experiencing that the entire folders section of Quick Access was missing after installing the previous flight.
• We fixed an issue impacting Search reliability in the previous flight.
• [News and interests] Fixed an issue where news and interests could occlude other content on the taskbar especially on smaller screens.
• We fixed an issue where the tooltip text for items in Start’s Power button menu wasn’t displaying correctly.
• We fixed an issue resulting in a crash if you entered WinPE and tried to enable Narrator using WIN + CTRL + Enter.
• We fixed an issue resulting in some Insiders experiencing a bug check with error SYSTEM_THREAD_EXCEPTION_NOT_HANDLED when rebooting or shutting down in the previous flight.
• We fixed an issue that could result in a bugcheck when starting WSL.
• We fixed an issue that could result in the Windows Update Settings page showing progress dots but never loading.
• We fixed an issue where navigating to Power and Sleep in Settings would crash Settings.
• We fixed the issue where a random toggle that didn’t do anything was appearing under Settings > Personalization > Lock screen.
• We fixed an error resulting in some Insiders recently seeing an error when trying to add a password to a local account that was created without a password.
• We fixed an issue where if you opened the Pinyin IME settings via Search, the Settings page would be unexpectedly blank.
• We fixed an issue that could result in your desktop background going black after snapping an app to the side of your screen.
• We fixed an issue where some of the text in Snipping Tool wasn’t displaying correctly.
• We fixed an issue causing the Handwriting Input Panel to not work for pen input on ARM64 PCs.
• We fixed an issue impacting clipboard history reliability.
• We fixed an issue resulting in characters being duplicated in certain apps when typing with the Korean IME.
• We fixed an issue resulting in not being able to insert composition strings when typing with an IME after copying and pasting a text box in PowerPoint.
• We fixed an issue resulting in key events being lost when renaming files in File Explorer while typing with an IME.
• We fixed an issue where when typing with the Japanese or Chinese IMEs in certain apps that have their own UI for IME candidates, the IME candidates were not displayed in the app’s UI.
• The fix we mentioned in Build 21327 to address an issue where a toggled key on the touch keyboard had the wrong background color is now rolling out to all Insiders in the Dev Channel.
• We fixed an issue causing an increase in login time in the previous flight.
• We fixed an issue resulting in some Insiders finding that boot time was longer in the previous flighting.
• We fixed an issue resulting in the network button on the login screen not working and potentially crashing.
• We fixed an issue causing some logins to hang on a black screen. If you continue to see a similar problem, please file a new feedback in Feedback Hub.
• We fixed an issue that could result in freezes when watching videos in Chromium-based browsers in recent Dev Channel builds.

Known issues

• We’re looking into reports of the update process hanging for extended periods of time when attempting to install a new build.
• [News and interests] Pressing ESC key to dismiss an opened context menu in the flyout dismisses the whole flyout instead.
• [News and interests] Sometimes the news and interests flyout cannot be dismissed with pen.
• [ARM64] Insiders who installed the preview version of the Qualcomm Adreno graphics driver on the Surface Pro X may experience reduced brightness of the display. This issue is fixed with an updated version of the preview graphics driver at https://aka.ms/x64previewdriverprox. If you are experiencing this issue, please see the feedback collection for more information.
• We’re investigating an issue where elements of Search (including the search box in File Explorer) are no longer displaying correctly in dark theme.
• We’re working on a fix for an issue introduced in the previous flight impacting WSUS users where the “Check online for updates from Microsoft Update” option is greyed out. If you are impacted, you can run the following command from an elevated Command Prompt to set the reg key so that scan will check Microsoft servers:
  • reg add “HKLM\Software\Microsoft\WindowsUpdate\UX\Settings” /f /v ScanMicrosoftOnly /t REG_DWORD /d 0x01

Then click the regular “Check for updates” button in Windows Update Settings. Please note, if the scan needs to be done repeatedly the reg key will need to be re-added each time, as scanning reads and erases the key.

• Due to an issue with migrating the shortcuts into the new Windows Tools location, This PC shows up with the display name “computer.” We already have a bug fix on the way to address this issue.
• Some non-administrative apps, such as 3D Viewer and Print 3D, that were previously in the Windows Accessories folder are now in Windows Tools. These app shortcuts will be moved back into Start with an upcoming bug fix. They are still searchable and accessible via Windows Tools in the meantime.
• The Windows Camera App currently does not respect the default brightness setting set via the new Camera Settings page.
• Some cameras currently may not support adjustment in the Camera Settings App when the camera is also in use by another app.
• Accessing the virtual GPU is broken for Windows and Linux guests, adding a vGPU to a VM will have no effect and the VM will continue running with software rendering.
• [ADDED] Theme-aware splash screens have disappeared in this build. A fix is coming to re-enable this in a future flight.
• [ADDED] In some cases, Auto HDR might not correctly enable for all eligible titles. To ensure that Auto HDR is enabled for all eligible titles, please visit Settings > Display > HDR settings and confirm that Auto HDR is turned on. If you still run into trouble, please reach out to us via the Feedback Hub, on our Twitter (@DirectX12), or on the DirectX Discord.
• [ADDED 4/9] Split screen mode for Auto HDR does not work in this build; please look to the next build for a fix.
• [ADDED 4/12] We’re working on a fix for an issue where in some cases user accounts will be migrated during the upgrade, but the user profile was not. This may occur if a device is abruptly restarted during the upgrade process. The user profile can be recovered from the Windows.old folder, or by simply rolling back to the previous version.

Important Insider Links

You can check out our Windows Insider Program documentation here, including a list of all the new features and updates released in builds so far. Are you not seeing any of the features listed for this build? Check your Windows Insider Settings to make sure you’re in the Dev Channel. Submit feedback here to let us know if things weren’t working the way you expected.

If you want a complete look at what build is in which Insider channel, head over to Flight Hub. Please note, there will be a slight delay between when a build is flighted and when Flight Hub is updated.

Thanks,
Brandon
(Amanda is enjoying some much-needed time off this week!)