The tool removes malicious software from an already-infected computer. Antivirus products block malicious software from running on a computer. It is significantly more desirable to block malicious software from running on a computer than to remove it after infection.

Learn how to remove malware from your PC. Use Microsoft Defender Antivirus in Windows 10 or Windows 11 to scan your PC for malware, viruses, or other threats.

Install, manage, or uninstall apps in Microsoft Edge. With Microsoft Edge, you can install and manage applications from your favorite web sites onto your devices for fast access. Use the edge://apps page to see your installed applications and manage app permissions.

There are several types of files you can download from the web—documents, pictures, videos, apps, extensions and toolbars for your browser, among others. When you select a file to download, Internet Explorer will ask what you want to do with the file.

Discusses how to remove viruses, spyware, rogue software, or malware using Microsoft Security Essentials, Microsoft Safety Scanner and Microsoft Defender Offline.

Protect your PC from potentially unwanted applications. Windows 10. Potentially unwanted applications (PUA) are a category of software that can cause your machine to run slowly, display unexpected ads, or at worst, install other software which may be more harmful or annoying.

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.

Symptoms. When you download a file or a program in Internet Explorer 11, the file download may fail. In that case, you may receive one of the following error messages: This file couldn't be downloaded. This program couldn't be downloaded. Resolution. Update information.

Download Microsoft Defender on your devices either by: Scanning the following QR code. Searching for Microsoft Defender in your app store. Sharing with your devices, the following link: Copy link. We encourage you to install Microsoft Defender on at least five devices per person.

You can download files and folders from Microsoft OneDrive, or from SharePoint in Microsoft 365, SharePoint Server Subscription Edition, or SharePoint Server 2019 to your computer with just a few clicks. Note: If you're downloading regularly from a Shared folder, you can add and sync shared folders to your own OneDrive.