When trying to install a one-time purchase of Office from accounts.microsoft.com, you might see an error message that states "Unsupported operating system"
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For the best performance, use the latest version of the Windows or Mac operating system for your version of Office as follows:
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PC: Windows 10, Windows 8.1, Windows 8, Windows 7 Service Pack 1, Windows Server 2016, Windows Server 2012 R2, Windows Server 2012, or Windows Server 2008 R2
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Mac OS X 10.10
Check the system requirements for the latest info.
Did you buy the right version of Office for your hardware?
If you bought a one-time purchase of Office, such as Office Home & Student, you might have bought the Mac version for your Windows PC, or the Windows version for your Mac.
To check which version you bought, go to Services & subscriptions and look for the following:
This is the Windows version
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Windows versions of Office might show for PC in the title. If you don't see it, look for For 1 PC in the subtitle
This is the Mac version
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Mac versions of Office show for Mac in the title and For 1 Mac in the subtitle
If you bought the wrong version of Office for your hardware, contact Microsoft support.
Note: Microsoft 365 can be installed on both Windows PCs and Macs.
Are you installing on a mobile device or Chromebook?
The Office desktop apps are for Windows PC or Macs only. To install Office on a mobile device, such as the iPad Pro or a Chromebook, you can download the Office mobile apps from your device's app store. For help, see Set up Office apps and email on a mobile device.