Here are some answers to the frequently asked questions about the OneDrive desktop app for Windows.

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 sign in and create app passwords for Microsoft apps and devices that don't support two-step verification.

Learn how to open a shared mailbox in Outlook. Shared mailboxes let a group of users view and send email, and share a calender, and open a contact list from a common mailbox.

Learn how to troubleshoot USB-C problems in Windows and fix USB devices, ports, and adapters not working properly.

If Scroll Lock is on, your cursor moves between columns and rows, not cells. Here's how to turn off Scroll Lock.

Find and open File Explorer in Windows 10 and Windows 11, and customize Quick access by pinning and removing files and folders.

Email messages that you receive can be saved as a file on your computer, or a message that you are composing can be saved as a draft and finished later.

Recover a corrupted workbook manually when Excel can't start File Recovery mode automatically and learn about saving backup and recovery files to prevent losing your work.

This article shows you how to use the Fn key and the F lock key.