How to use the PC Health Check app - Microsoft Support
Learn how to open, update, and use the PC Health Check app to monitor and improve your Windows device performance. Find out how to check Windows 11 eligibility, backup and sync, battery and storage capacity, startup time, and more.
Update Windows - Microsoft Support
Learn how to check for and install the latest Windows updates to keep your device running smoothly and securely. Find troubleshooting tips, activation help, and FAQs for Windows 11 and Windows 10.
Activate Office - Microsoft Support
Learn how to activate Microsoft 365 or a non-subscription version of Office using a product key, a Microsoft account, or a trial. Troubleshoot activation errors and get help with Office.com/setup.
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Access for Microsoft 365, OneNote for Microsoft 365, Publisher for Microsoft 365, Visio Plan 2, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Office 2021, OneNote 2021, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Office 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016, OneNote 2016, Publisher 2016, Office 2016, Microsoft 365 for home, Office for business, Microsoft 365 admin, Project for Office 365
Where to enter your Office product key - Microsoft Support
Learn where to enter your Office product key for different versions and scenarios, such as Microsoft 365, Office 2021, or Microsoft Store purchases. Find tips and troubleshooting for common issues with product keys.
Applies To:
Office 2021, Office 2021 for Mac, Office 2019, Office 2019 for Mac, Office 2016, Microsoft 365 for home, Office for business
Troubleshoot problems updating Windows - Microsoft Support
Learn how to fix common issues with Windows 11 or Windows 10 updates, such as error codes, slow installation, or missing files. Follow the steps to free up drive space, restart, check drivers, and more.
Use the Office offline installer - Microsoft Support
Learn how to download and install Microsoft 365 offline on a PC with a slow or unreliable internet connection. Follow the steps for your plan (Office for home or Office for business) and activate Office after installation.
Applies To:
Office 2021, Office 2019, Office 2016, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Small Business Admin, Office 365 operated by 21Vianet - Admin, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin
Download and install or reinstall Office 2019, Office 2016, or Office ...
Find out how to download and install Office 2016 on your PC or Mac, or reinstall it if you already have a product key. Learn how to activate Office 2016 and troubleshoot common issues.
Applies To:
Office 2019, Office 2016, Office 2016 for Mac, Office 2013
How to start a scan for viruses or malware in Microsoft Defender
Learn how to start a quick or a deep scan for malware on Windows, Android, or Mac devices with Microsoft Defender. Find out the signs of infection and how to protect your PC with offline scan.
Applies To:
Microsoft Defender on Android, Microsoft Defender on Mac, Microsoft Defender on Windows
Change or reset your password - Microsoft Support
Learn how to change or reset your password for Windows 11 or Windows 10, whether you use a Microsoft account or a local account. Find out the different options and steps for signing in or out, and what to do if you forget your password.
Change your default search engine in Microsoft Edge
Learn how to switch the default search engine in Microsoft Edge to any site that uses OpenSearch technology. Bing provides an enhanced search experience in the new Microsoft Edge, but you can also choose other options.