Microsoft Office Professional 2021

Desktop

Computer and processor

• Windows OS: 1.6 GHz or faster, 2-core. 2 GHz or greater recommended for Skype for Business
• macOS: Intel processor
• Memory
• Windows OS: 4 GB RAM; 2 GB RAM (32-bit)
• macOS: 4 GB RAM

Hard disk

• Windows OS: 4 GB of available disk space
• macOS: 10 GB of available disk space; HFS+ hard disk format (also known as macOS Extended) or APFS
• Updates may require additional storage over time.

Display

• Windows OS: 1280 x 768 screen resolution (32-bit requires hardware acceleration for 4K and higher)
• macOS: 1280 x 800 screen resolution

Graphics

• Windows OS: Graphics hardware acceleration requires DirectX 9 or later, with WDDM 2.0 or higher for Windows 10 (or WDDM 1.3 or higher for Windows 10 Fall Creators Update). Skype for Business requires DirectX 9 or later, 128 MB graphics memory, and 32-bits-per-pixel-capable format.
• macOS: No graphics requirements.

Operating system

• Windows OS: Windows 10 SAC, Windows 8.1, Windows Server 2019 or Windows Server 2016. Please note Office 365 ProPlus will be supported on Windows Server 2016 through October 2025.
• macOS: One of the three most recent versions of macOS. When a new version of macOS is released, the macOS requirement becomes one of the then-current three most recent versions: the new version of macOS and the previous two versions.
• For the best experience, use the most current build of any operating system specified above. Product functionality and feature availability may vary on older systems (Search Lifecycle Policy).

Browser

The current version of Microsoft Edge, Internet Explorer, Safari, or Chrome. Most Office 365 apps also work with the latest version of Firefox; however, Firefox does not support all Microsoft Teams meeting features. Get more details

.NET version

Windows OS: Some features may require .NET 3.5 or 4.6 and higher to also be installed. Microsoft Teams requires 4.6 or higher.

Other

Video calls & meetings:

For a better experience with video calls and online meetings, we recommend using a computer that has a 2.0 GHz processor and 4.0 GB RAM (or higher). The optional Blur my background video effect requires a processor with Advanced Vector Extensions 2 (AVX2) support. See Hardware decoder and encoder driver recommendations for a list of unsupported decoders and encoders.

Teams requires a USB 2.0 video camera, a microphone, and an audio-output device in order to utilize its full range of calling and meeting features.

Teams live events:

If you are producing a Teams live events, we recommend using a computer that has a Core i5 Kaby Lake processor, 4.0 GB RAM (or higher) and hardware encoder. See Hardware decoder and encoder driver recommendations for a list of unsupported decoders and encoders.

Mobile Apps

Processor

• iOS: N/A
• Memory
• iOS: N/A
• Android: 1 GB

Operating system

• Windows: Office Mobile applications (Word, Excel, PowerPoint, OneNote, Outlook Mail, and Outlook Calendar) require a supported version of Windows 10 Mobile running on a supported device.
• iOS: Office for iPad® and iPhone® (including Outlook for iOS on iPad® and iPhone®) requires iOS 12.0 or later. Office for iPad Pro™ requires iOS 11.0 or later. Office is supported on the two most recent versions of iOS. When a new version of iOS is released, the Office Operating System requirement becomes the two most recent versions: the new version of iOS and the previous version.
• Android: Office for Android can be installed on tablets and phones running any of the supported versions of Android and have an ARM-based or Intel x86 processor. Starting on July 1, 2019, support will be limited to only the last four major versions of Android.
• Product functionality and feature availability may vary on older systems. For the best experience, use the latest version of any operating system specified above.

Browser

• Safari and Chrome: Office 365 and Office 2019 are designed to work with the current version of the Safari and Chrome browsers.
• Microsoft Edge: Office 365 and Office 2019 are designed to work with the latest version of the Microsoft Edge browser. Microsoft Edge browser updates are available through the Windows Servicing branches. Office might continue to work with versions of the Edge browser older than the latest branch, but Office can’t provide any guarantees.
• Internet Explorer: Office 365 and Office 2019 are designed to work with Internet Explorer 11. We recommend that you upgrade to Internet Explorer 11, if you are using an earlier version. Office might continue to work with versions of Internet Explorer other than Internet Explorer 11, but Office can’t provide any guarantees.
• Firefox: Most Office 365 apps and Office 2019 are designed to work with the current version of Firefox. However, Firefox does not fully support Microsoft Teams meetings.
• Microsoft Teams meetings are fully supported on the latest versions of Microsoft Edge and Google Chrome. For more details on browser support for Teams meetings, see Limits and specifications for Microsoft Teams: Browsers