When critical Windows system files are missing or corrupted, your operating system may begin to malfunction. Common symptoms include Windows features not working properly, system errors, or Windows becoming unresponsive or freezing.

When you download a file, Internet Explorer checks for clues that the download is malicious or potentially harmful to your PC. If Internet Explorer identifies a download as suspicious, you'll be notified so you can decide whether or not to save, run, or open the file.

Right-click on the Start menu and select Search . Under Best match, select PC Health Check from the list of results. In the PC Health Check windows that opens, select the Check now button. It can take up to 24 hours for Windows Update to refresh eligibility info.

Here's how to do that on Windows, Mac, or Android.

Microsoft recommends downloading and installing the latest printer driver for a printer. Installing the latest printer driver might resolve known issues with the printer, increase performance, or add additional capabilities.

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.

Learn how to back up and restore apps, settings, files, photos, and Microsoft Edge favorites and preferences on your Windows PC using Windows Backup.

To digitally sign an Office document, you must have a current (not expired) digital certificate. Digital certificates are typically issued by a certificate authority (CA), which is a trusted third-party entity that issues digital certificates for use by other parties.

Download the drivers for the desired device from the device manufacturer's site. Make sure to download the correct drivers that match the version and architecture of Windows. Once downloaded, if necessary, uncompress the downloaded drivers. Make a note of where the drivers are located on the Windows device.

You can use the Inbox Repair tool (SCANPST.EXE) to diagnose and repair errors in your Outlook data file. The Inbox Repair tool checks the Outlook data files on your computer to see if they're in good shape.