If the steps above don't work, you may need to reinstall Windows. For more info, see Windows 10 recovery options. Describes how to use the System File Checker tool to troubleshoot missing or corrupted system files in Windows 8.1, Windows 8, Windows 7 or Windows Vista.

Microsoft generally releases the MSRT on a monthly cadence as part of Windows Update or as a standalone tool. (For exceptions, see Skipped releases.)Use this tool to find and remove specific prevalent threats and reverse the changes that they made (see Covered malware families).For comprehensive malware detection and removal, consider using Windows Defender Offline or Microsoft Safety Scanner.

Select Update Driver. If Windows doesn't find a new driver, you can try looking for one on the device manufacturer's website and follow their instructions. Reinstall the device driver. In the search box on the taskbar, enter device manager, then select Device Manager.

Launch the Xbox app for PC. Click your Profile picture. Go to Settings. Go to About. Locate the Version number. If your version number is 2311.1001.7.0 or newer (higher), then you are good to go. If your version number is older (lower) than that, then you will need to update your Xbox app for PC with these steps: Launch the Microsoft Store app.

Manage. Remove malware from your Windows PC. OneDrive (home or personal) OneDrive for Windows. Microsoft Defender Antivirus is a powerful tool that finds and removes malware from your PC. Here's how to use it in Windows 10 or 11 to scan your PC.

Security Windows 10. You are receiving this message because the Memory Integrity setting in Windows Security is preventing a driver from loading on your device. Here are a few options you can try if you want to be able to use this driver: See if an updated and compatible driver is available through Windows Update or from the driver manufacturer.

The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs. It also fixes corrupted registry keys. First, you'll need to download the troubleshooter. Download troubleshooter. If you see the File Download box when you start downloading, select Run or Open.

Windows 7. Windows 8.1. Windows 10 (Then select Download now.) Windows 11 (Then select Download now .) Important: Back up your files before you install or reinstall Windows on your PC. Learn how. To create the installation media, here's what you'll need: A PC with a reliable internet connection.

Error message 1. The Windows Installer Service could not be accessed. Error message 2. Windows Installer Service couldn't be started. Error message 3. Could not start the Windows Installer service on Local Computer. Error 5: Access is denied. Resolution.

Select Start > Settings > Windows Update > Check for updates and then install any available updates. If the problems aren't all resolved, try running the troubleshooter again to check for additional errors, or see Fix Windows Update errors and follow the troubleshooting steps.