ERROR_DEVICE_SUPPORT_IN_PROGRESS - 171 (0xAB)
Device's command support detection is in progress.
Updated: Feb 21, 2026
Technical Meaning
The error code ERROR_DEVICE_SUPPORT_IN_PROGRESS with the numeric value of 171 and hexadecimal representation of 0xAB indicates that a device's command support detection is currently in progress. This status typically occurs during initialization or configuration phases where the system is determining which commands are supported by the device.
Error Details
This error code is specific to scenarios involving device drivers and their interaction with hardware components. It suggests that the operating system is performing an internal check to ascertain the capabilities of a particular device, ensuring compatibility before allowing full command execution.
Usage Context
The context in which this error might be encountered includes:
- Installation or update of device drivers
- Initialization of newly connected hardware devices
- Configuration changes affecting device operation
- System startup and initialization processes where device support is being evaluated
Developer Interpretation
Developers should interpret this error as an indication that the system is in a state of evaluating device capabilities. This can be expected during normal operations and does not necessarily indicate a failure or issue with the hardware or software.
Related Errors
ERROR_DEVICE_NOT_CONNECTED(0x1B)ERROR_DEVICEMAP_ERROR(0xA3)ERROR_DRIVER_FAILED_TO_INIT(0x15)
FAQ
Q: What does ERROR_DEVICE_SUPPORT_IN_PROGRESS mean?
A: It indicates that the system is currently evaluating the command support of a device.
Q: Is this error critical?
A: No, it is part of normal initialization and configuration processes. It typically resolves automatically once the evaluation is complete.
Q: Can I ignore this error?
A: Yes, unless it persists or causes other issues, it can be safely ignored as it is a transient state during device setup.
Summary
The ERROR_DEVICE_SUPPORT_IN_PROGRESS (171) error code signifies that the system is in the process of determining which commands are supported by a device. This status is expected during initialization and configuration phases and does not indicate an issue with the hardware or software unless it persists beyond normal operation.