Find out how to stop Windows Security from alerting you about or blocking a trusted file, file type, or process, by adding it to the exclusions list.

How to use the COUNT function in Excel to count the number of cells that contain numbers, and to count numbers within a list of arguments.

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

Change your password with your email provider. See the following sections for instructions on changing your email account password for several major email providers.

Learn how to troubleshoot Windows activation errors. Browse common activation errors and learn what you can do to fix them.

If you are having trouble with your microphone features, the following information can help you troubleshoot and resolve issues.

Learn how to switch Outlook from working offline to online with your mail server on Microsoft Support.

To create a document, open Word, select a blank document or template, and start typing. Discover professionally designed templates for Microsoft Word.

Create Outlook Data Files (.pst) on your computer to save Outlook items by account, project, or to archive older items.

Learn how to set up Microsoft Family Safety to manage screen time, filter content, and share location with your family members.