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WU_E_UH_APPX_DEFAULT_PACKAGE_VOLUME_UNAVAILABLE
WU_E_UH_APPX_DEFAULT_PACKAGE_VOLUME_UNAVAILABLE means the default storage location for AppX packages could not be used when the update tried to service an application package.
What to verify
- Check whether the configured default package volume is online, writable, and still present.
- If packages were redirected to another drive, make sure that drive is mounted before the update runs.
- Review AppX deployment logs for the exact volume or path that was unavailable.
Get-AppxDefaultVolumeThe default package volume is a deployment target
Microsoft’s MSIX PowerShell guidance describes Get-AppxDefaultVolume as the cmdlet that returns the default volume used as the target for package deployment operations, and Get-AppxVolume enumerates volumes known to the computer. This HRESULT therefore has a specific storage object behind it rather than a generic “disk full” meaning.
Record the default AppxVolume and confirm that the corresponding volume is mounted and accessible when the update handler runs. On systems that moved packages to another volume, compare the package-volume configuration with a working machine. Changing the Windows Update service or redownloading update metadata does not make an unavailable AppX deployment volume accessible.
References
- Microsoft: Get-AppxDefaultVolume
- Microsoft: PackageVolume class
- Microsoft: Windows Update error reference
References
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