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Fix Project Standard 2021 and Office LTSC 2021 Installation Conflicts
Question details
The user needs to resolve an installation and activation conflict between Project Standard 2021 Retail and Office Standard 2021 LTSC.
- Product
- Microsoft Office 2021, Microsoft Project 2021
- Device & OS
- not provided
- Scenario
- Installing retail-licensed Project Standard 2021 on a computer running volume-licensed Office LTSC 2021.
- Observed behavior
- The installation or activation fails because the installation technology or update channel differs between the two software products.
Before troubleshooting, verify the exact version and license type of both your Microsoft Office and Microsoft Project installations to ensure you configure the correct update channels.
Align Update Channels Using the Office Deployment Tool
Ensure both Project Standard 2021 and Office LTSC 2021 use the exact same installation technology and update channel to resolve conflicts.
Microsoft restricts installing products with different installation technologies (like Click-to-Run vs. MSI) or mismatched update channels on the same device. To fix this, you must configure both products to use the identical update channel.
Open an existing Office application, such as Word or Excel. Go to File > Account, and look under the Product Information section. Note the update channel listed next to 'About Word' or 'About Excel'.
Visit the official Microsoft Download Center and download the Office Deployment Tool (ODT). Extract the setup files to a local folder on your computer.
Open the extracted XML configuration file in a text editor like Notepad. Edit the file to include both Office LTSC 2021 and Project Standard 2021, ensuring the 'Channel' attribute is identical for both (e.g., Channel="PerpetualVL2021").
Open Command Prompt as an Administrator. Navigate to the folder where you extracted the ODT, and run the command 'setup.exe /configure configuration.xml' to initiate the synchronized installation.
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Frequently Asked Questions
Why do Office LTSC and Project Standard conflict during installation?
Microsoft prevents the simultaneous installation of products that utilize differing installation technologies (such as Click-to-Run versus Windows Installer) or mismatched update channels on the same device to avoid system conflicts and ensure update stability.
How do I check my current Office update channel?
Open any Office application, such as Word or Excel, navigate to File > Account, and locate the update channel information under the Product Information section, right next to the 'About' button.
Can I run Visio 2021 with Office LTSC 2021?
Yes, Visio 2021 can be installed alongside Office LTSC 2021, provided that both products are configured to use the exact same installation technology, version, and update channel using the Office Deployment Tool.
