Ansyswbu.exe Encountered A Problem. A Diagnostic File Has Been Written ❲Limited × COLLECTION❳

Multiple users on the same machine experience the crash. Even simple operations cause failure.

The problem started after a security software update. Error may appear inconsistently. Multiple users on the same machine experience the crash

Crash occurs when starting a new simulation component (e.g., dragging a "Fluid Flow" system). Diagnostic file may contain LICENSE or FLEXlm errors. Error may appear inconsistently

| Keyword | Meaning | |---------|---------| | EXCEPTION_ACCESS_VIOLATION | Memory access issue (often hardware or driver related) | | STACK_OVERFLOW | Infinite recursion or very deep command calls | | Out of memory | Insufficient RAM or virtual memory | | Failed to load DLL | Missing or corrupted dependency | | Graphics driver | GPU-related failure | | Corrupt project file | Issue with .wbpj or .mechdb file | Multiple users on the same machine experience the crash

Introduction Few things are more frustrating than losing hours of simulation work to a sudden crash. For users of ANSYS Workbench, one particularly notorious error message stands out: "ansyswbu.exe encountered a problem. A diagnostic file has been written."

If you encounter this error repeatedly despite following the steps above, consider evaluating your workstation specifications against ANSYS’s hardware requirements, and ensure you are running a certified graphics driver configuration. Simulation stability begins with a stable foundation. Last updated: For ANSYS Workbench releases 2022 R1 through 2025 R1. Always consult the ANSYS Customer Portal for release-specific known issues and hotfixes.

The crash occurs when opening a specific project, but new projects work fine. Diagnostic file may show XML parsing error or unexpected end of file .