FIXING OFFICE 2021 INSTALLATION ERROR CODE 0-20390

Fixing Office 2021 Installation Error Code 0-20390

Fixing Office 2021 Installation Error Code 0-20390

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Error code 0-20390 often appears during the installation of Microsoft Office 2021 when using the Office Deployment Tool, indicating that something in the configuration isn’t being recognized or applied correctly. To fix this, launch Command Prompt with administrator privileges, change directory to where both setup.exe and configuration.xml are stored, and run:




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setup.exe /configure configuration.xml


This ensures the installer reads the correct configuration with the proper permissions. After initiating the command, verify that configuration.xml has no syntax errors or incorrect paths that could cause the tool to fail. For a full walkthrough of this error, including sample configuration settings and common pitfalls, see the detailed guide available at WinChatSupport’s article on error code 0‑20390 for Office 2021.

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