To unzip a single file or folder, open the zipped folder, then drag the file or folder from the zipped folder to a new location. To unzip all the contents of the zipped folder, press and hold (or right-click) the folder, select Extract All..., and then follow the instructions.

Files that are designed for Windows operating systems have an .exe extension. These files are compressed, self-extracting files. To correctly download and extract these .exe files, follow these steps: Locate the file that you want to download.

Use this tool to find and remove specific prevalent threats and reverse the changes that they made (see the "Covered malware families" list in the "Release information" section of KB 890830). For comprehensive malware detection and removal, consider using Windows Defender Offline or Microsoft Safety Scanner.

Use the System File Checker tool to repair missing or corrupted system files. When critical Windows system files are missing or corrupted, some Windows features may stop working correctly or Windows may stop responding altogether.

Follow these steps to automatically diagnose and repair problems with files and folders in Windows. These problems might include the inablility to delete files or folders from the Recycle Bin, or troubles with trying to copy, move, rename, or delete a file. Select the Download button on this page.

Having trouble installing an Xbox game on your PC? Get more information on how to install games.

Provides links to the uninstall tools and directions for many security programs.

After you download and extract the contents of the self extracting compressed file, MDT_KB4564442.exe, use the following steps to replace the original files on any affected computers with the Microsoft Deployment Toolkit installed.

The installation file is typically named Autorun.exe or Setup.exe, but this may vary. If you're not sure, check the Readme file in the folder for instructions about how to run the installation process.

Learn how to download files from the web, change your default download location, and find files you've downloaded on your PC using Internet Explorer.