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.

This article is for Outlook.com. If you're using Outlook for Windows, see Fixes or workarounds for recent issues in Outlook for Windows.. If you're having problems accessing Outlook.com, you can see the status of Microsoft Office Online Services at the Service Health portal.. If you're having problems sending or receiving email, read how to Fix Outlook.com email sync issues.

How to sign in to Outlook on the web, access your email, contacts, and calendar.

How to use conditional formatting in Excel to visually explore, analyze, and identify patterns and trends.

PowerPoint で Microsoft 365 Copilot の AI の力を使用して、最初からプレゼンテーションを作成する方法について説明します。

Learn how to insert data from a picture with Excel - and you can use your smartphone or tablet to take the picture. Excel's powerful AI capabilities can convert your hand written or printed data into a table.

Découvrez comment installer, réinstaller ou activer Microsoft 365 ou Office 2019 sur un PC ou Mac.

The Microsoft Edge feature that blocks pop-ups is effective in preventing websites from automatically opening a new window or tab, or a partial window on top of your current web page. This feature is turned on by default. There are many different types of pop-ups, including advertisements, notices, offers, or alerts that can appear at various times on any web page. Some can be helpful, such as ...

Repair broken Office app installations. Depends on your Office installation type (Click-to-run or MSI-based), you'll see the following options to proceed with the repair.

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.