ERROR_DBG_TERMINATE_THREAD - 691 (0x2B3)
Debugger terminated thread.
Updated: Feb 21, 2026
Technical Meaning
The ERROR_DBG_TERMINATE_THREAD error code indicates that a debugger has terminated a specific thread. This is typically observed during debugging sessions where the debugger explicitly requests the termination of a thread to halt execution or perform other diagnostic actions.
Error Details
This error code is used by the Windows Debugging API and is not intended for general application use but rather for developers working with debuggers and kernel-level operations. It signifies that the debugger has taken control over the debugging session and has terminated a particular thread to achieve its goals, such as halting execution at a specific point or analyzing the state of the thread.
Usage Context
This error code is primarily encountered in scenarios where developers are using low-level debugging tools or kernel-mode drivers. It may also appear when interacting with system components that support debugging capabilities, such as the Windows Debugger (WinDbg) or other custom debugging solutions.
Developer Interpretation
When encountering this error, developers should understand that it is a normal part of the debugging process and does not indicate an issue with the application itself. The presence of ERROR_DBG_TERMINATE_THREAD typically means that the debugger has completed its intended operation on a specific thread and has resumed control over the debugging session.
Related Errors
- ERROR_DBG_CONTROL_C: Another error code related to debugging, indicating that the user has pressed Ctrl+C during a debugging session.
- STATUS_BREAKPOINT: An exception status indicating that a breakpoint was hit during execution.
FAQ
Q: What does ERROR_DBG_TERMINATE_THREAD mean?
A: It indicates that a debugger has terminated a specific thread, which is part of the normal debugging process and not an error in the application itself.
Q: How can I handle this error in my code?
A: Since this error is related to debugging operations, there is no need for special handling within your application. It should be ignored unless you are developing custom debugging tools or kernel-level drivers that interact with debuggers directly.
Summary
ERROR_DBG_TERMINATE_THREAD (691) is a specific error code used by the Windows Debugging API to indicate that a debugger has terminated a thread during a debugging session. It is not an application error and should be interpreted as part of normal debugging operations.