ERROR_PORT_NOT_SET - 642 (0x282)
An attempt to remove a processes DebugPort was made, but a port was not already associated with the process.
Updated: Feb 21, 2026
Technical Meaning
The error code ERROR_PORT_NOT_SET with the numeric value 642 and hexadecimal representation 0x282 indicates an attempt to remove a process's DebugPort when no port is associated with that process.
Error Details
This error typically occurs in scenarios where a developer or system administrator attempts to detach a debugging session from a process but finds that the process does not have any DebugPort set. The DebugPort is used for communication between the debugger and the debuggee (the process being debugged).
Usage Context
This error can be encountered during operations involving process management, particularly when dealing with debugging processes. It may also arise in scenarios where a developer attempts to modify or remove debugging configurations.
Developer Interpretation
When this error is returned, it signifies that the operation to detach the DebugPort from the specified process cannot proceed because no port was associated with the process in the first place. This could be due to the process not being debugged at the time of the operation or the process having been terminated before the attempt to remove the DebugPort.
Related Errors
- ERROR_NO_DEBUGGING的权利 (641, 0x281): Indicates that debugging is not enabled for the specified process.
- ERROR_PORT_ALREADY_SET (643, 0x283): Indicates an attempt to set a DebugPort when one already exists.
FAQ
Q: What does ERROR_PORT_NOT_SET mean?
A: It means that an attempt was made to remove the DebugPort from a process that does not have any DebugPort associated with it.
Q: Can this error be ignored?
A: This error typically indicates a state of the system or process that prevents the intended operation. Ignoring it could result in unexpected behavior or failure of debugging operations.
Summary
The ERROR_PORT_NOT_SET error code is specific to scenarios where an attempt is made to remove a DebugPort from a process without one being present. Developers should ensure that processes are correctly configured for debugging before attempting such operations.