Get-AppxPackage *Microsoft.Office* # Or check classic COM objects: New-Object -ComObject Excel.Application A. Local Source Installation Download the installation files once and share them to reduce network load.
First, create a download.xml :
<RemoveMSI All="TRUE" /> This removes all MSI-based Office products (2010, 2013, 2016) before installing 2021. <ExcludeApp ID="Access" /> <ExcludeApp ID="Publisher" /> <ExcludeApp ID="Outlook" /> Excluding Outlook can speed deployment and is common in RDS or shared machines. D. Adding Multiple Languages <Language ID="en-us" /> <Language ID="fr-fr" /> <Language ID="de-de" /> <AddLanguage ID="match-os" Fallback="en-us" /> 6. Common Errors and Solutions | Error | Likely Cause | Fix | |-------|--------------|-----| | 0x80070005 | Permission denied | Run CMD as Administrator. | | 0x80040609 | Invalid channel for product | Change Channel to PerpetualVL2021 (not MonthlyEnterprise ). | | 0x80070002 | File not found | Ensure setup.exe and XML are in same folder; check XML for typos. | | Installation hangs | Conflicting Office MSI leftovers | Use Microsoft SaRA tool to scrub old Office entries. | | PIDKEY not accepted | Wrong key or product ID mismatch | Verify ProPlus2021Volume vs Standard2021Volume . | setup.exe configure. configuration-office2021enterprise.xml
setup.exe /download download.xml Finally, reference that same SourcePath in your configure XML. Add this inside <Add> : Get-AppxPackage *Microsoft