Your productivity, supercharged

Microsoft 365 is compatible with PC, Mac, Android, and iOS. See system requirements for compatible versions of your devices, and for other feature requirements.

No. Microsoft 365’s applications are tailored for each platform and each operating system. The applications available for Mac users and the specific features included may be different from those available for PC users. With Microsoft 365, you can be flexible. With your account, you are not limited to exclusively Mac or exclusively PC, so you can transition across devices.

Yes. Documents that you have created belong fully to you. You can choose to store them online on OneDrive or locally on your PC or Mac.

Internet access is required to install and activate all the latest releases of apps and services included in all Microsoft 365 subscription plans. Note that if you are an existing subscriber, you do not need to reinstall or purchase another subscription.

For Microsoft 365 plans, internet access is also needed to manage your subscription account, for example to install Office apps on other PCs or to change billing options. Internet access is also required to access documents stored on OneDrive, unless you install the OneDrive desktop app.

You should also connect to the internet regularly to keep your version of Microsoft 365 up to date and to benefit from automatic upgrades. If you do not connect to the internet at least every 31 days, your apps will go into reduced functionality mode, which means that you can view or print your documents but cannot edit the documents or create new ones. To reactivate your apps, simply reconnect to the internet.

You do not need to be connected to the internet to use the Office apps, such as Word, Excel, and PowerPoint, because the apps are fully installed on your computer.

Your Microsoft account is the combination of an email address and password that you use to sign in to services like OneDrive, Xbox LIVE, and Outlook.com. If you use any of these services, you already have a Microsoft account that you can use or you can create a new account. Learn more about a Microsoft account.

As part of signing up for a trial or purchasing Microsoft 365, you will be prompted to sign in with a Microsoft account. You must be signed in with this account to install and manage your Microsoft 365 subscription, or to use some subscription benefits, including cloud storage.

You can share Microsoft 365 Family and Microsoft 365 Premium with five other people, for a total of six users. Microsoft 365 Personal can be used by one person.

If you have an active Microsoft 365 Family or Microsoft 365 Premium subscription, you can share it with up to five other people. Each person you share your subscription with can install Microsoft 365 on all their devices and sign in to five devices at the same time.

To add someone to your subscription, visit your Microsoft account and follow the instructions to add a user. Each person you add will receive an email with the steps they need to follow. Once they have accepted and completed the steps, their information, including the installs they are using, will appear on their My Account page. You can stop sharing your subscription with someone or remove a device they are using on your Microsoft account.

Visit learn more about free apps.

Microsoft Defender is a cross-device security app that helps individuals and families protect their data and devices by continuously scanning the web for threats to your identity and personal data (US only). Defender also helps you stay safer online with malware protection, real-time security notifications, and security tips. Download the Microsoft Defender app.

Microsoft Defender is a new cross-device app that helps people and families stay safer online. Microsoft Defender adds new features and a simplified, user interface. Microsoft Defender also brings valuable device protection to iOS, Android, Windows, and Mac, with malware protection, web protection, real-time security notifications, and security tips. Microsoft Defender is available in the Apple, Google, and Microsoft app stores and requires a Microsoft 365 Personal or Family subscription to use.

Windows Security, formerly known as Windows Defender Security Center, is built-in security on Windows PCs to protect your device and data. Windows Security is pre-installed and automatically enabled. Windows Security includes Microsoft Defender Antivirus software that protects your Windows device and data against viruses, ransomware, trojans, and other malware unless non-Microsoft Antivirus software is active.

AI features included in Microsoft 365 Family and Microsoft 365 Premium plans are only available to the subscription owner and cannot be shared with others.

To use Copilot in Word, Excel, PowerPoint, OneNote, and Outlook, make sure you have the latest version of Microsoft 365 installed. If you're signed in, have the latest updates installed, and still don't see Copilot, please restart your Microsoft 365 apps. Learn more about why I am not seeing Copilot in my apps.

Microsoft 365 supports Arabic, Chinese Simplified, Chinese Traditional, Czech, Danish, Dutch, English, Finnish, French, German, Hebrew, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Russian, Spanish, Swedish, Thai, and Turkish. We plan to add more languages soon. You can also learn more about Copilot supported languages here: Copilot for Microsoft 365 supported languages - Microsoft Support.

Visit our Copilot help & learning site to start using Copilot today.

Your Microsoft 365 Personal, Family, or Premium subscription unlocks higher AI usage limits to experience and engage with Copilot in your Microsoft 365 apps, the Microsoft Copilot app, and beyond. Learn more about credits.

Microsoft 365 Business Basic, Business Standard, and Business Premium are tailored for businesses, offering professional email with a custom domain, admin controls for managing access and devices, and scalability to add additional users as your business grows. They include advanced security features like Exchange Online Protection to guard against phishing and malware, with Business Premium adding Microsoft Defender for Business for ransomware protection and advanced threat management. Plus, you can access professional collaboration tools like Microsoft Teams with meeting recordings, transcription, and team workspaces, while business apps such as Microsoft Bookings can simplify meeting and appointment scheduling. Additionally, Microsoft 365 Copilot, an AI-powered assistant for work, is available as an add-on to boost productivity and creativity. Explore plans to find the right one for your business.