Learn how to sign in to your Outlook or Hotmail mailbox using your Microsoft account.

If you suspect that your device may have malware you should have Microsoft Defender run a scan. Here's how to do that on Windows, Mac, or Android.

Learn how to format a flash drive to NTFS on a Windows PC.

Channels are the conversations you have with your teammates around a specific topic, department, or project. Team owners and admins determine which members can create channels. A standard channel is open to all members, and anything posted is searchable by others. Private channels are best for smaller audiences or a specific project. Shared channels are open to those outside of your team or ...

When composing an email message, you might see some symbols within your text. These are actually formatting marks, such as dots (for spaces) or arrows (for tab characters) in Outlook. Formatting marks assist with text layout. They do not appear on a printed message. When you turn formatting marks on or off, your choice remains in effect for all subsequent messages you compose, reply to, or ...

Edit a drop-down list that's based on an Excel Table If you set up your list source as an Excel table, then all you need to do is add or remove items from the list, and Excel will automatically update any associated drop-downs for you. To add an item, go to the end of the list and type the new item. To remove an item, press Delete.

If you’re experiencing network or website connectivity issues, the Hosts file may be part of the problem. This article explains what the Hosts file is, how it works, and why resetting it to the default state can resolve common connection issues. What's the Hosts file The Hosts file is a plain‑text system file used by the operating system to map human‑friendly hostnames (such as contoso ...

Learn how you can free up drive space in Windows. Keep your PC running smoothly and up to date by increasing the disk space.

Keep your files, photos, and videos automatically backed up and available on all your devices.

This article describes how to permanently remove the contents of the Temporary Internet Files folder from your computer. Watch a video about how to delete the contents of the Temporary Internet Files folder yourself.