Problem. A Diagnostic File Has Been Written: Ansyswbu.exe Encountered A

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:

Crash occurs when rotating, zooming, or generating mesh previews. Diagnostic file may show OpenGL error or EXCEPTION_ACCESS_VIOLATION with graphics-related stack traces.

Run the ANSYS Product Improvement Tool or use the Uninstall/Repair option from the Control Panel. Ensure that your Anti-Virus isn't flagging ansyswbu.exe as a false positive. Summary Checklist Reset User Prefs: Rename the %AppData%\Ansys folder. GPU Check: Update drivers and set to High Performance.

if found_diag: print(f"Crash detected: found_diag") archive_diagnostic(found_diag, r"C:\ANSYS_Crash_Reports") attempt_clean_restart() else: print("No diagnostic file found.") The error is rarely due to a single issue

This is the most common fix and clears corrupt temporary data that might be causing the crash. Ansys Innovation Space Rename AppData folder : Close all Ansys sessions. In File Explorer, type in the address bar. Open the folder and rename your current version folder (e.g., rename Rename Temp folder in the File Explorer address bar. Locate the folder and rename it to .ansys.old Restart Workbench

: Open a fresh instance of ANSYS Workbench. Create a new Mechanical component system, right-click the Model cell, select Import Mechanical Database , and target the recovered .mechdb file.

Right-click the file and change its extension name to . Running ANSYS without administrator privileges

Laptops often use both Intel Integrated Graphics and dedicated NVIDIA/AMD GPUs, causing conflicts. Open NVIDIA Control Panel. Go to .

Running ANSYS without administrator privileges, or installing it in C:\Program Files without proper permissions, can block ansyswbu.exe from writing diagnostic or temporary files.

Stop and then restart the License Manager to refresh the connection. 📂 Locating the Diagnostic File right-click the Model cell

: Download dedicated workstation drivers rather than mainstream gaming packages. Install the latest stable releases directly from the NVIDIA Workstation Driver Support portal or the AMD Software:兼 Pro Edition repository.

When the crash occurs, ANSYS writes a diagnostic text file or a .dmp file. Reviewing this file can pinpoint the exact system conflict.

"ansyswbu.exe encountered a problem. A diagnostic file has been written"

Because AnsysWBU.exe drives the hardware-accelerated 3D viewport, a driver mismatch or a multi-GPU conflict will result in an immediate crash. ANSYS Workbench mesh crashes (ANSYSWBU.exe problem)

: Settings or temporary files in the %Appdata% or %Temp% folders often become corrupted.