Starting a Microsoft Office for Windows application in Office Safe Mode can allow you to safely use it when it has encountered certain problems.

Ready to install Microsoft 365 or Office 2024? Before you begin, make sure your PC or Mac meets the system requirements. If you already redeemed a product key, reinstalling the apps, or you have an assigned license through work or school, you can skip ahead and go to the section sign in to download and install Microsoft 365 or Office.

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.

Starting a Microsoft Office for Windows application in Office Safe Mode can allow you to safely use it when it has encountered certain problems.

Be sure you're connected to the Internet and then open any application, such as Word or Excel. In most cases, the Office or Microsoft 365 apps are activated once you start an application and after you click Accept to agree to the Microsoft Software License terms.

Download and install or reinstall Office 2021, Office 2019, or Office 2016. Important: Support for Office 2016 and Office 2019 ended on October 14, 2025 and there will be no extension and no extended security updates. All of your Office 2016 and Office 2019 apps will continue to function.

Learn how to get older apps or programs to run on Windows 10 or Windows 11 by adjusting compatibility settings.

Starts Word and opens a read-only copy of a document that is stored on a Microsoft Windows SharePoint Services site. The site must be on a computer that is running Word 2007 or later or Windows SharePoint Services 2.0 or later. Note: If the document is checked out to you, the /h switch has no effect. Word opens the file so that you can edit it.

Learn how to download and install apps you need from your Microsoft 365 business subscription.

Download the offline installer from your account portal. Important: Before you begin, make sure your PC or Mac meets the system requirements. Note: If you're trying to install Microsoft 365 that you got through your work or school and you already signed in with your work or school account, don't follow these instructions.