How to lock cells in Excel to protect your data. You can also unlock a range of cells and grant permissions to others to edit.

Learn how to enable Adobe Flash in Microsoft Edge. By pressing submit, your feedback will be used to improve Microsoft products and services.

Troubleshoot start up problems in Outlook. If Outlook is able to start in safe mode, then the problem is likely with one of your add-ins.

Learn how to troubleshoot and fix problems setting up your email in Outlook.

Use the new Outlook for Windows for coordinated Mail, Calendar and People apps on Windows 11.

Learn how to change the refresh rate for your display in Windows to determine how smoothly motion appears on your screen.

Learn how to use Wi-Fi 7 and Wi-Fi 6 and WPA3 in Windows for better wireless coverage and network security.

Set up the Microsoft Authenticator app from the Security info page. Depending on your organization’s settings, you might be able to use an authentication app as one of your security info methods.

Learn how to find the serial number on your Surface so you can register your product or request service.

This article shows you how to reassign certain keys to make it easier to accomplish your daily tasks.