Upgrade to Windows 10: FAQ - Microsoft Support
Learn how to upgrade your existing device to Windows 10 or buy a new PC. Get answers to common questions about upgrading to Windows 10.
Manage drive space with Storage Sense - Microsoft Support
How to use Storage Sense to free up hard drive space on your Windows device.
Seamlessly transfer content between your devices
Learn how to use drag and drop to transfer content between your Android device and PC.
Fix problems with the Start menu - Microsoft Support
Learn more about how to fix problems with the Windows Start menu, and what to do if the Start menu won't open.
Global Customer Service phone numbers - Microsoft Support
This page provides phone numbers of Microsoft customer service.
Help with Microsoft Store purchases - Microsoft Support
Learn how to contact Microsoft Store support to get help for your payment and billing issue.
Applies To:
Microsoft account dashboard
SUMIFS function - Microsoft Support
How to use the SUMIFS function in Excel, one of Excel’s math and trig functions, to add arguments that meet multiple criteria.
Applies To:
Excel for Microsoft 365, Excel for Microsoft 365 for Mac, Excel for the web, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2019 for Mac, Excel 2016, Excel Web App
Windows Media Player - Microsoft Support
Learn how to download, customize, and troubleshoot Windows Media Player 12 with helpful guides and tips.
Using email in Outlook on the web - Microsoft Support
Get help with signing in, changing passwords, creating and sending mail, deleting mail, creating folders, and more in Outlook on the web.
Applies To:
Outlook.com, Outlook on the web for Exchange Server 2016
My Account portal for work or school accounts - Microsoft Support
Change two-step verification settings; Common problems with two-step verification for work or school accounts; Manage app passwords for two-step verification