Learn how to use Narrator, a screen-reading app built into Windows, with this complete guide and how-to articles.

Microsoft アカウントにサインインするためのエイリアスを使用した Microsoft アカウントのメール アドレスまたは電話番号を変更する方法について説明します。

Office for Mac applications automatically check for potential spelling and grammatical errors as you type. If you’d rather wait to check spelling and grammar until you're done writing, you can turn off automatic checking, or you can check spelling and grammar all at once.

Troubleshoots and fixes common issues with security and malware prevention in Windows.

Install codecs, filters, and plug-ins only from trusted sources, such as the provider's official website. Even then, use caution: some codec providers offer minimal customer support. Before installing any digital media components, set up a system restore point.

Note: If you receive a prompt asking whether to allow the app to access your camera (iOS) or to allow the app to take pictures and record video (Android). select Allow so the authenticator app can access your camera to take a picture of the QR code in the next step.If you don't allow the camera, you can still set up the authenticator app as described in Manually add an account to the app.

Learn how to change your notification settings and quick actions using the notification center in Windows.

See a list of options available for starting Windows in diagnostic modes such as safe mode.

Training: Watch these videos to help your school, work, or organization use Microsoft Teams to video conference, work remotely, and become proficient using Teams.

Keeping leading zeros and large numbers in Excel. Use a custom format to keep the leading zeros. If you want to resolve the issue just within the workbook because it's not used by other programs as a data source, you can use a custom or a special format to keep the leading zeros.