What does Windows error code 15634 (ERROR_INSTALL_OPTIONAL_PACKAGE_REQUIRES_MAIN_PACKAGE) mean?

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: An optional app package cannot be installed without its main package.

Previous	Next
ERROR_DEV_SIDELOAD_LIMIT_EXCEEDED	ERROR_PACKAGE_NOT_SUPPORTED_ON_FILESYSTEM

ERROR_INSTALL_OPTIONAL_PACKAGE_REQUIRES_MAIN_PACKAGE

ERROR_INSTALL_OPTIONAL_PACKAGE_REQUIRES_MAIN_PACKAGE means Windows was asked to install an optional package, but its required main package is not present.

Optional packages extend a main package and depend on its package identity. Install or provision the main package first, then deploy the optional package through the intended related-set workflow.

What to check

Identify the main package family named by the optional package metadata.
Verify that the main package is installed for the relevant user or provisioned as required by the deployment scenario.
When distributing a related set, use an App Installer or bundle configuration that defines the main and optional packages together.

Get-AppxPackage -AllUsers

Microsoft: App package deployment troubleshooting

Microsoft: Get-AppxLog

Microsoft: Add-AppxPackage

Microsoft: Optional packages and related sets

Looking for a different code? Search another status or error code.