For a limited time after upgrading Windows, you have the option to go back to the previous version you had installed. This can be useful if you encounter issues with the new version, such as compatibility problems with your software or hardware, or if …

To install this update, you must install Service Pack 1 for Windows 7 or Windows Server 2008 R2. To apply this update, you do not have to make any changes to the registry. You may have to restart the computer after you apply this update. This update does not replace a previously released update. Status.

Applies To Windows XP Windows Vista Windows 7 Windows 8.1 An unsupported version of Windows doesn't receive software updates from Microsoft. These updates include security updates that protect your PC from harmful viruses, spyware, and other malicious software, which can steal your personal information.

I see messages that Windows might not be genuine. How do I fix this? If you're seeing these notifications, it's likely that your copy of Windows wasn't properly activated.

Installation media, such as a USB flash drive, can be used to install a new copy of Windows, perform a clean installation of Windows, or reinstall Windows. To create installation media, go to the software download website, where step-by-step instructions can be found.

Steps to reinstall Windows with media. You can reinstall Windows when you are signed in to Windows (in-place upgrade), or from the Windows Recovery Environment (clean install). Select the option that best suits your needs: If you suspect that your device has been infected, make sure that your antivirus software is up to date.

Find out how to reset your PC, go back to a previous version of Windows, or use media to reinstall Windows.

If you have Windows 8 (not updated to Windows 8.1), Windows 7 Service Pack 1 (SP1) or Windows 7 (not updated with SP1), one of the following full-screen notifications might appear on your computer (depending on the system that you’re using). Your Windows 7 PC is out of support.

Not running Windows 11 yet? See Activate Windows or Activate Windows 7 or Windows 8.1. Run the Windows Activation troubleshooter. If you are using a Windows 11 device, start by running the automated Windows Activation troubleshooter in the Get Help app. It will automatically run diagnostics and attempt to fix most of the problems.

Windows Update can help fix problems with your PC. Fix problems using Windows Update is a recovery tool that can help resolve issues related to updates. Using this tool will reinstall the current version of Windows on your device. This tool …

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.