Can I Install Office 2016 Alongside Office 2010? Compatibility Guide
Question details
The user wants to know if it is possible and safe to install Microsoft Office 2016 on a computer that already has Office 2010 installed.

- Product
- Microsoft Office 2016 / 2010
- Device & OS
- Windows (specifically noting Windows 7)
- Scenario
- Installing a newer version of Microsoft Office while intending to keep an older version accessible on the same system.
- Observed behavior
- Installation may be blocked on unsupported operating systems like Windows 7, and shared components or applications like Outlook can experience conflicts and profile duplication.
Before attempting to install multiple versions of Office, ensure you have backed up your Outlook PST or OST data files, as installing a newer version can modify or duplicate existing email profiles.
Verify OS Compatibility and Perform a Custom Installation
Check if your Windows version supports Office 2016 and use the custom installation method to prevent the installer from overwriting Office 2010.
Office 2016 can generally coexist with Office 2010 in most configurations. However, Windows 7 is not officially supported for Office 2016. You must verify your operating system first, and then explicitly tell the Office installer not to remove previous versions.
Press the Windows key, type 'System Information', and press Enter. Ensure you are running Windows 8.1, Windows 10, or Windows 11. If you are on Windows 7, you must upgrade your operating system before installing Office 2016.
Double-click your Office 2016 setup file. When the installation wizard prompts you with installation types, select 'Customize' instead of 'Upgrade' or 'Install Now'.
Navigate to the 'Upgrade' tab in the custom installation window and select the 'Keep all previous versions' radio button.
Click 'Install Now' and wait for the process to finish. Once completed, both Office 2010 and Office 2016 applications will be available in your Start menu.

Avoid Installation Conflicts with WPS Office
If installing multiple versions of Microsoft Office causes compatibility issues, or if your operating system is too old for Office 2016, try WPS Office. It is a free, lightweight alternative that installs seamlessly alongside any existing software without causing registry or shared component conflicts.
- 1. Download the installer: Visit the official WPS Office website and click the 'Free Download' button.
- 2. Run the setup: Open the downloaded installer file and accept the license agreement.
- 3. Install and launch: Click 'Install' to complete the setup in seconds, then open WPS Office to immediately start editing your documents.

Frequently Asked Questions
Can I run Outlook 2016 and Outlook 2010 at the same time?
No, Microsoft does not support running two different versions of Outlook on the same computer. Installing Office 2016 will generally upgrade your Outlook 2010 components, and you will only be able to use the newer version.
Why can't I install Office 2016 on Windows 7?
Microsoft designed Office 2016 for modern operating systems and does not list Windows 7 as a supported OS. Attempting to install it on Windows 7 will result in an installation error. You need to upgrade to Windows 8.1, 10, or 11.
Will installing Office 2016 automatically uninstall my Office 2010 apps?
If you choose the default 'Upgrade' option during installation, the installer will remove Office 2010. To prevent this, you must choose 'Customize' during setup and select the 'Keep all previous versions' option.




