Ansyswbu.exe Encountered A Problem. A Diagnostic File Has Been Written May 2026

The problem started after a security software update. Error may appear inconsistently.

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." The problem started after a security software update

Crash occurs when rotating, zooming, or generating mesh previews. Diagnostic file may show OpenGL error or EXCEPTION_ACCESS_VIOLATION with graphics-related stack traces. For users of ANSYS Workbench, one particularly notorious

The crash occurs only when a specific plugin is loaded or used. The crash occurs only when a specific plugin

If you cannot interpret the file, save it and contact ANSYS Support—they will ask for it. 1. Insufficient System Memory (RAM / Virtual Memory) Why it happens: ANSYS Workbench can consume 8-32 GB of RAM depending on model size. When memory runs out, ansyswbu.exe crashes when trying to allocate additional space—for example, when updating a mesh or refreshing a result.