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How to Install Microsoft Access with ODT Without Removing Existing Office
Question details
The user needs to install Microsoft Access using the Office Deployment Tool (ODT) alongside an existing Office 2019 installation without triggering an uninstall prompt.
- Product
- Microsoft Access, Office Deployment Tool
- Device & OS
- not provided
- Scenario
- Adding a standalone Microsoft Access volume license installation to a computer that already has a perpetual version of Office 2019 installed.
- Observed behavior
- The standard installer prompts the user to uninstall existing Office products because the specified configuration channel, architecture, or installation technology does not match the existing setup.
Verify your existing Office 2019 installation architecture (32-bit or 64-bit) and update channel in your Account settings, as the new Access installation must match these exactly to coexist.
Configure the ODT XML File and Execute Setup
Use a correctly formatted configuration.xml file that matches your existing architecture and update channel to bypass the uninstallation prompt.
Office products cannot coexist on the same machine if they use incompatible update channels, architectures, or installation technologies (e.g., mixing Click-to-Run with MSI). Standardizing these factors in your XML configuration ensures a smooth installation.
Download the Office Deployment Tool (ODT) from the official Microsoft Download Center and extract the files to a dedicated local directory, such as 'C:\ODT'.
Open Notepad and create a new text file. Set the SourcePath attribute to 'C:\ODT'. Ensure the OfficeClientEdition matches your existing Office architecture (e.g., '64') and set the Channel to 'PerpetualVL2021'.
Inside the XML file, specify the Product ID exactly as 'Access2021Volume'. Add the corresponding Language ID (e.g., 'en-us') to ensure it matches your system settings, then save the file as 'configuration.xml'.
Click the Windows Start menu, type 'cmd', right-click on the Command Prompt application, and select 'Run as administrator'.
Navigate to your ODT folder by typing 'cd C:\ODT' and press Enter. Run the command 'setup.exe /configure configuration.xml' to begin installing Access without removing Office 2019.
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Frequently Asked Questions
Why does the Office installer say I must uninstall existing products first?
This error occurs when your configuration.xml file specifies an update channel, architecture (32-bit vs. 64-bit), or installation technology (Click-to-Run vs. MSI) that is incompatible with your existing Office 2019 installation.
What exactly should be entered for the SourcePath?
The SourcePath should be the absolute file path to the local or network folder containing your ODT setup.exe and installation files. For example, if you extracted ODT to a folder on your C drive, your SourcePath would be 'C:\ODT'.
Can I install a 32-bit version of Access if my Office 2019 is 64-bit?
No. Microsoft strictly prevents mixing 32-bit and 64-bit Office applications on the same system. You must configure your ODT OfficeClientEdition to install the 64-bit version of Access.
