Use the Information Protection viewer to view protected files in Windows, Android, iOS, or Edge.

See how to work with ActiveX controls in your files, changing their settings, and how to enable or disable them by using the Message Bar and the Trust Center. You can also learn more about ActiveX controls and how they improve your files.

Use the following table to obtain applicable service pack information. Lists the supported versions of the Office viewers.

Find how-to articles, videos, and training for Microsoft Copilot, Microsoft 365, Windows, Surface, and more.

We'll show you self-help options first. Additional help is available if you need it, including live chat with a Microsoft specialist. Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

Right-click the Start button (lower-left corner) and select Apps and Features on the pop-up menu. Select the Microsoft 365 or Office product you want to repair and select Modify. Note: This will repair the entire Office suite even if it's just one application you want to repair such as Word or Excel.

Keeping your Surface up to date helps it perform at its best. In addition to software updates for Windows, it's also important to install hardware updates—these include drivers and firmware.

PowerPoint Viewer, a free download from Microsoft.com, enables viewing of PowerPoint presentations on computers that do not have PowerPoint installed.

For volume licensing support, open your Microsoft 365 admin center, select Help & support, and search for "manage volume licensing" or submit an online support request. Don't forget to include your license ID or agreement number, your contact phone number & email address so we can contact you.

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.