ERROR_PNP_IRQ_TRANSLATION_FAILED - 673 (0x2A1)
A IRQ translator failed to translate resources.
Updated: Feb 21, 2026
Technical Meaning
The error code ERROR_PNP_IRQ_TRANSLATION_FAILED (673, 0x2A1) is returned when a Plug and Play (PnP) IRQ translator fails to translate resources. This typically occurs during the initialization or configuration of hardware devices that require specific interrupt request (IRQ) lines.
Error Details
The error indicates that the system attempted to configure an IRQ line for a device but encountered a failure in the translation process. The translation is necessary because PnP manages the allocation and assignment of resources, including IRQs, to ensure proper operation without conflicts with other devices.
Usage Context
This error can occur during various operations such as device installation, driver loading, or system initialization. It may be triggered by hardware-specific issues or configuration problems within the operating system's PnP subsystem.
Developer Interpretation
When encountering this error, developers should consider the following aspects:
- Resource Allocation: Ensure that the IRQ line is available and not already in use by another device.
- Driver Compatibility: Verify that the driver being used supports the required IRQ allocation.
- System Configuration: Check if there are any system settings or policies that might interfere with resource translation.
Related Errors
ERROR_IRQ_NOT_FOUND(0x1F2): Indicates that an IRQ line could not be found for a device.ERROR_IRQ_BUSY(0x1F3): Suggests that the requested IRQ is already in use by another device or driver.ERROR_PNP_REGISTRY_ERROR(0x2A4): Points to issues with the PnP registry entries, which might affect resource translation.
FAQ
Q: What does ERROR_PNP_IRQ_TRANSLATION_FAILED mean?
A: It indicates a failure in translating resources by an IRQ translator during Plug and Play operations.
Q: How can I troubleshoot this error?
A: Review the device configuration, ensure proper driver support, and check system settings for any conflicts or restrictions.
Summary
The ERROR_PNP_IRQ_TRANSLATION_FAILED (673, 0x2A1) is a specific error indicating a failure in translating resources by an IRQ translator during Plug and Play operations. Developers should focus on resource allocation, driver compatibility, and system configuration to resolve this issue.