Locate and download the latest driver for your printer model, then follow the installation instructions on the manufacturer’s website. Most drivers are self-installing. After you download one, double-click (or double-tap) the file to begin installing. Then follow these steps to remove and reinstall the printer.

One of the most common ways of transmitting computer viruses is through file attachments. To help protect you and your recipients against computer viruses, Outlook blocks the sending and receiving of certain types of files (such as .exe and certain database files) as attachments.

If your account has been hacked, use our sign-in helper tool below to help guide you to the right solutions. The tool will ask for your email address or phone number, and either show appropriate self-help, or offer the chance to talk to an agent.

If you’re new to Excel, or even if you have some experience with it, you can walk through Excel’s most common formulas in this tour. With real-world examples and helpful visuals, you’ll be able to Sum, Count, Average, and Vlookup like a pro.

This article lists types of active content that can be blocked by settings in Trust Center and which, when present in a document, cause display of the Message Bar when you open your file. If active content is blocked, a Message Bar appears.