Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.

Do you need some help installing Quick Assist? For the best experience, download and install the new version of the Quick Assist app from Microsoft Store. If you have problems installing Quick Assist, here are some steps to try to get it installed and working properly.

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

You can insert a drop-down list of valid entries (also called a drop-down menu or drop-down box) in Excel to make data entry easier, or to limit entries to certain items that you define.

How to access and change the privacy settings in Windows 10 and 11.

How to use the SUMIF function in Excel to add the values in a range that meet criteria that you specify.

Use Outlook in the new Microsoft Edge. In Microsoft Edge, sign in to your Outlook on the web or Outlook.com account.

Receive photos, videos, or other kinds of files that you or a friend shares from another device, such as a phone, laptop, or tablet. On your PC, select Start > Settings > Devices > Bluetooth & other devices. Learn how to pair.

Microsoft Edge で、閲覧履歴やその他の履歴を表示したり削除したりする方法について説明します。

Learn how to remove malware from your PC. Use Microsoft Defender Antivirus in Windows 10 or Windows 11 to scan your PC for malware, viruses, or other threats.