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- 8 Things Microsoft Office 2016 is Great for as a Productivity Suite; Message error: '.the specified Product key has already been activated the Maximum number of times' Online activation did not work - the product key used maximum number of times permitted message; How to Change Product Key in Office 2010 Without Uninstalling.
- If this is the first time you're installing Office you may have some setup steps to do first. Expand the learn more section below. However, if you're reinstalling Office, and you've already redeemed a product key and have an account associated with Office, then go to the section sign in and install Office on your PC or Mac.
If you see the error This product key has already been used when you enter your product key on www.office.com/setup or Microsoft365.com/setup, this means your product key has already been redeemed and is no longer needed. Instead, use your Microsoft account to sign in to account.microsoft.com and install your Office product.
Download Office 2016 Mac
-->In many cases, you can install Office, Project, and Visio on the same computer. But, there are some combinations of Office, Project, and Visio that can't be installed together on the same computer.The two main things that determine whether Office, Project, and Visio can be installed together on the same computer are the version of the product and the installation technology used to install the product. What governs whether an installation scenario is supported are these two rules:
- You can't install two products together that have the same version but use different installation technologies.
- You can't install two products of different versions together if both products use Click-to-Run as the installation technology and those products have overlapping Office applications.
See the example installation scenarios section for several examples of installation scenarios that are supported and not supported, along with an explanation of why they are or aren't supported, based on the rules listed above.
Office releases and their version number
The following table shows Office releases that are currently supported by Microsoft, their associated version, and all the possible installation technology. The information listed in the table also applies to releases of Project and Visio. For example, the subscription version of the Project desktop app or Visio Professional 2016.
| Office release | Version | Installation technologies |
|---|---|---|
| Office 365 (and Microsoft 365) | 16.0 | Click-to-Run Microsoft Store |
| Office 2019 | 16.0 | Click-to-Run Microsoft Store |
| Office 2016 | 16.0 | Click-to-Run Windows Installer (MSI) Microsoft Store |
| Office 2013 | 15.0 | Click-to-Run Windows Installer (MSI) |
You can find this version information by going to Control Panel > Programs > Programs and Features. You can also find this version in the About dialog for the Office app. For example, open Word, and go to File > Account > About Word. On the top line of the About Microsoft Word dialog box, you will see the version number. For example, Microsoft Word 2019 MSO (16.0.10336.20044) 32-bit. For steps to find this version in different Office releases, see Find details for other versions of Office.
Note
- Office 365, Microsoft 365, Office 2019, and Office 2016 all have the same version: 16.0
- Office 2010, which is no longer supported, had a version of 14.0 and used Windows Installer (MSI) as the installation technology.
Installation technologies used by Office
There are different ways to purchase Office, Project, and Visio. For example, you can purchase them as part of an Office 365 (or Microsoft 365) plan, as a one-time purchase from a retail store, or through a volume licensing agreement. How you purchase them, along with which Office release you purchased – for example, Office 365 or Office 2016 – determines what installation technology is used to install Office.
The three installation technologies are:
- Click-to-Run
- Windows Installer (MSI)
- Microsoft Store
In newer releases of Office, you can go to File > Account in any Office app, such as Word, and the type of installation technology is listed under the Product Information section.
Another way to tell which installation technology was used to install Office is to File > Account in any Office app. Under the Product Information section, if you see an Update Options choice, Office was installed by using Click-to-Run. If you don't see an Update Options choice, and you don't see any mention of Microsoft Store, then Office was installed by using Windows Installer (MSI).
The Microsoft Store installation technology is only used when you purchase and install Office from the online Microsoft Store.
You can't rely on just the product name and release to determine the installation technology used by Office. For example, if you purchase Visio Standard 2016 from a retail store, it uses Click-to-Run. But, if you purchase Visio Standard 2016 through a volume licensing agreement, it uses Windows Installer (MSI).
Example installation scenarios
Here are some example installation scenarios, whether they're supported, and an explanation of why they are or aren't supported.
Key Already Used Office 2016 For Mac
| Products to install | Supported? | Explanation |
|---|---|---|
| Microsoft 365 Apps Project Professional 2013 (volume licensed) | Yes | They use different installation technologies (Click-to-Run and MSI) and they are different versions (16.0 and 15.0) |
| Microsoft 365 Apps Access 2013 (retail purchase) | No | They both use Click-to-Run and they are different versions (16.0 and 15.0), but Microsoft 365 Apps already includes Access. |
| Microsoft 365 Apps Visio Professional 2013 (retail purchase) | Yes | They both use Click-to-Run, they are different versions (16.0 and 15.0), and there is no overlap in applications. |
| Office Professional Plus 2019 (volume licensed) Visio Professional 2016 (volume licensed) | No, but there is an alternative installation method available. | They use different installation technologies (Click-to-Run and MSI), but they are the same version (16.0). For more information about the alternative installation method that's available, see Use the Office Deployment Tool to install volume licensed versions of Project 2016 and Visio 2016. |
| Office Standard 2019 (volume licensed) Visio Standard 2013 (volume licensed) | Yes | They use different installation technologies (Click-to-Run and MSI) and they are different versions (16.0 and 15.0). |
| Microsoft 365 Apps Visio Professional 2016 (volume licensed) | No, but there is an alternative installation method available. | They use different installation technologies (Click-to-Run and MSI), but they are the same version (16.0). For more information about the alternative installation method that's available, see Use the Office Deployment Tool to install volume licensed versions of Project 2016 and Visio 2016. |
| Microsoft 365 Apps Project Professional 2019 (volume licensed) | Yes, but with a caveat. 1 | They both use Click-to-Run and are the same version (16.0). |
| Microsoft 365 Apps Visio Standard 2019 (retail) | Yes, but with a caveat. 1 | They both use Click-to-Run and are the same version (16.0). |
1 You must be using at least Version 1808 of Microsoft 365 Apps, because that's the earliest version that recognizes Office 2019 products, including Project and Visio. Version 1808 or later is available in Current Channel, Monthly Enterprise Channel, Semi-Annual Enterprise Channel (Preview), and Semi-Annual Enterprise Channel. For Microsoft 365 Apps release information, see Update history for Microsoft 365 Apps.
Additional information
Activate Office 2016 Mac
- All installed products must be either the 32-bit version or the 64-bit version. For example, you can't install a 32-bit version of Visio on the same computer with a 64-bit version of Office.
- Even though a particular installation scenario is supported, it might not be recommended. For example, we don't recommend having two different versions of Office installed on the same computer, such as Office 2013 (MSI) and Office 2019 (Click-to-Run).
- Volume licensed versions of Office 2013 and Office 2016 use Windows Installer (MSI). Volume licensed versions of Office 2019 use Click-to-Run. The same is true for volume licensed versions of Project and Visio.
- For Office 365, Microsoft 365, and Office 2019 products, all products installed on the computer must be using the same update channel. For example, the volume licensed version of Office Professional Plus 2019 can only use the PerpetualVL2019 update channel. Therefore, it can't be installed on the same computer that has the subscription version of the Project desktop app using Semi-Annual Enterprise Channel or on the same computer that has the subscription version of the Visio desktop app using Current Channel.
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