What does Windows error code 450 (ERROR_CAPAUTHZ_NOT_DEVUNLOCKED) mean?

 
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ERROR_CAPAUTHZ_NOT_DEVUNLOCKED

The device mode does not permit this capability deployment

ERROR_CAPAUTHZ_NOT_DEVUNLOCKED is returned before an application receives the requested capability. The deployment path requires a device configuration that permits development or sideload scenarios, but neither mode is enabled. This is distinct from an invalid package signature or an undeclared capability: Windows is rejecting the authorization context of the device itself.

Check whether the package is a development build, whether its signing certificate is trusted, and whether the device is managed by policy. Enable Developer Mode only on systems intended for development; production distribution should use an approved Store or enterprise deployment path. Rebuilding the package without changing device mode or distribution policy will reproduce the same result.

What to inspect

  • Confirm the intended distribution channel and device ownership.
  • Inspect Developer Mode and sideload policy before changing the manifest.
  • Verify that a trusted production package does not unnecessarily depend on development mode.

References


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