A Problem. A Diagnostic File Has Been Written ((install)) - Ansyswbu.exe Encountered

Workbench leverages OpenGL for rendering 3D geometry. Outdated, corrupted, or incompatible graphics drivers are a leading cause of GUI instability, especially during meshing or result visualization.

The error is rarely due to a single issue. Instead, it stems from a combination of software configuration, hardware limitations, and user actions. The most frequent culprits include: Workbench leverages OpenGL for rendering 3D geometry

| Symptom / Exception | Likely cause | Fix | |-------------------------------|----------------------------------------|----------------------------------------------------------------------| | ACCESS_VIOLATION | Graphics driver / corrupted memory | Update GPU driver, disable "Use GPU acceleration" in Tools → Options | | Fatal error in mesher | Poor geometry / mesh settings | Simplify geometry, change meshing method to Tetrahedrons | | ansyswbu.exe crashes on open| Corrupted Workbench config | Delete %APPDATA%\Ansys\v2xx\WB.xml | | Crash during solving (Mechanical APDL) | Not enough RAM / disk space | Increase pagefile, close other apps, reduce mesh size | | Stack overflow | Recursive loops in commands / large model | Add *go,start or increase stack size via bcsoption | Instead, it stems from a combination of software

If you suspect your GPU is the issue, you can force ANSYS to use software rendering to test stability: The problem started after a security software update

Failed updates, manual deletion of files, or registry issues.

Download and clean-install official vendor drivers directly via the NVIDIA Driver Download Center or AMD Drivers Hub instead of relying on default Windows Update channels.

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