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ERROR_DBG_CREATE_PROCESS_FAILURE_LOCKDOWN
Treat create a process on a locked-down ARM target as a contract result, not as justification for resetting unrelated state. The target rejected creation of a new debuggee process before application startup.
First returning layer
The debugger-lockdown family reports policy enforcement. The protected target, debugging entitlement, and host policy matter more than debugger command syntax.
Create, attach, connect, and start-server failures are separate boundaries. A successful network connection does not prove that process creation or attach authorization is permitted. Keep the numeric value, declared return type, and first returning operation together with ERROR_DBG_CREATE_PROCESS_FAILURE_LOCKDOWN; the same integer can belong to a different status namespace in another API.
Evidence map
| Capture | Diagnostic value |
|---|---|
| Package/executable identity, deployment state, architecture, launch command, and lockdown policy. | Identifies the concrete object and operation associated with create a process on a locked-down ARM target. |
| Windows build, device model, boot/development mode, and the first debugger facility event. | Separates argument or lifecycle state from a lower-layer provider failure. |
| Client and target timestamps plus transport trace without source code or secrets. | Creates a stable before-and-after comparison. |
| Comparison with an approved development target using the same debugger version. | Shows whether this condition is the first result or a translated summary. |
Preserve package/executable identity, deployment state, architecture, launch command, and lockdown policy before reinstalling, rebooting, clearing state, or substituting another device or provider. A success observed only after such a change is useful comparison data, but it does not identify the original cause.
Change one condition at a time
- Deploy and launch the same package locally without debugger creation. Keep unrelated inputs fixed so the changed result remains attributable to the tested variable.
- Change only the device development/lockdown state in a controlled lab target. Record the first returned status and any state transition observed.
- Capture the earliest target-side refusal before changing firewall, package, or process state. Treat a changed result as a new boundary rather than automatic resolution.
Decision points
| Observed comparison | Next conclusion to test |
|---|---|
| The first control changes the result | Concentrate on the variable isolated by this check: Deploy and launch the same package locally without debugger creation. |
| The second comparison reproduces the same first status | Preserve lower-layer provider, driver, service, or runtime evidence before editing application data. The second controlled check was: Change only the device development/lockdown state in a controlled lab target. |
| A different status appears after the bounded change | The operation moved to another boundary after the third controlled check. That check was: Capture the earliest target-side refusal before changing firewall, package, or process state. Retain both results and interpret the replacement through its own API contract. |
Repair and regression test
Targeted correction. Permit the documented debugging capability or use an approved development image; do not disable unrelated security controls. Modify only the object, argument, policy, provider, or lifecycle state identified by the collected evidence.
Acceptance criterion. The debugger creates one process with the intended package identity and ordinary launches remain governed by production lockdown. Re-run the original operation that produced this condition under its original identity and supported configuration, then keep one negative control that still produces the expected neighboring outcome.
Technical references
References for ERROR_DBG_CREATE_PROCESS_FAILURE_LOCKDOWN on the deployed platform version.
- Microsoft Open Specifications: HRESULT values — defines the status namespace used.
- Microsoft: HRESULT facility extraction — documents the API or lifecycle boundary behind this condition.
- Microsoft: Windows Device Portal overview — provides ABI, implementation, or protocol context.
- Microsoft: PLMDebug — supports the portability and verification limits.
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