Error Unwind Consolidate 684 (0x2AC): Fix it With 4 Steps
Using a try-catch block can help you handle this error
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When developing, you may encounter ERROR_UNWIND_CONSOLIDATE that can prevent your app from running. In today’s guide, we’re going to show you how to fix this issue once and for all, so let’s get started.
How can I fix ERROR_UNWIND_CONSOLIDATE?
1. Ensure that exceptions are properly handled
- Open your code.
- Use the try-catch statement like this:
try {
    // Risky operations
}
catch (const std::exception& e) {
   // Handle known exceptions
}
catch (...) {
   // Handle all other exceptions
} - Save changes.
In addition, avoid leaving resources in inconsistent states. Also, avoid operations that can corrupt the stack.
2. Use RAII
- Open your code.
- Adjust it like this:
class Resource {
public:
    Resource() { /* Acquire resource */ }
    ~Resource() { /* Release resource */ }
}; - Save changes.
- Also, avoid low-level stack manipulation.
3. Capture the stack trace
- Open your application in Debug mode in Visual Studio.
- Replicate the error.
- Check the Call Stack window for details.
- Look for missing or corrupted stack frame or calls to invalid memory regions.
Alternatively, you can use WinDbg like this:
- Attach WinDbg to the application process.
- Set breakpoints and navigate through the code.
- Analyze the crash dump with
!analyze -v t
4. Other tips to try
- Temporarily disable any tools such as debuggers, profilers, and runtime hooks, as they can affect the stack.
- Update third-party libraries or plugins.
- Replace outdated or incompatible dependencies.
- Log exceptions and look for the patterns when the error occurs.
- Ensure that the application has no necessary runtime libraries.
Keep in mind that sometimes ERROR_UNWIND_CONSOLIDATE will show as 684 (0x2AC) A frame consolidation has been executed message instead.
While this message can be a problem, in some instances it can be ignored, so you might want to do that if it doesn’t impact the functionality of the app.
Keep in mind that this isn’t the only issue, we recently wrote about ERROR_UNWIND and ERROR_INVALID_UNWIND_TARGET in our previous guides, so feel free to visit them.
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