What does Windows error code 15621 (ERROR_DELETING_EXISTING_APPLICATIONDATA_STORE_FAILED) mean?

 
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ERROR_INVALID_STAGED_SIGNATURE ERROR_INSTALL_PACKAGE_DOWNGRADE

ERROR_DELETING_EXISTING_APPLICATIONDATA_STORE_FAILED

Existing per-user application data blocked package replacement or cleanup

ERROR_DELETING_EXISTING_APPLICATIONDATA_STORE_FAILED occurs while deployment attempts to delete the package’s previous application-data store. The store can include local, roaming, temporary, and settings containers associated with the package identity. Open files, access restrictions, profile problems, or storage errors can prevent the cleanup.

Identify the affected user and stop all application, background-task, and broker activity for the package. Check profile and file-system errors before retrying. When data must be reset intentionally, use application-data or package-management APIs that understand the package identity; deleting arbitrary directories can leave registration and state repositories inconsistent.

What to inspect

  • Check which user profile owns the failing data store.
  • Stop app processes and background tasks before cleanup.
  • Preserve or export required user data before reset.

References


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