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

Navigate to %TEMP% and rename the .ansys folder to .ansys_old .

Outdated or unsupported graphics drivers, or the system defaulting to integrated graphics instead of a dedicated GPU, frequently cause UI crashes.

Corrupt preference files often prevent the Mechanical GUI from rendering properly. Resetting them forces ANSYS to rebuild clean configuration files. Close all ANSYS applications. Open the Windows Run dialog ( Win + R ). Navigate to %TEMP% and rename the

Right-click your desktop and open the (or AMD Software). Navigate to Manage 3D Settings > Program Settings .

The error message is a generic fault notification within the ANSYS Workbench environment. It indicates that the primary executable for the Workbench interface— ansyswbu.exe —has suffered a crash or an unhandled exception. Rather than providing an immediate solution, the system generates a diagnostic file (typically an .err , .log , or .xml file) to capture the state of the software at the moment of failure. Common Root Causes Resetting them forces ANSYS to rebuild clean configuration

This article provides a deep dive into the meaning of this error, where to find the diagnostic file, and—most importantly—a step-by-step methodology to resolve it permanently.

If the error persists, gather a full diagnostic package for official support: Ansys License Management Center from the Start menu. Gather Diagnostic Information and save the resulting Submit this zip file along with the AnsysWBDumpFile.dmp Ansys Customer Portal representative. Ansys Innovation Space interpreting a specific error code Right-click your desktop and open the (or AMD Software)

Faulty Windows dependencies or overly aggressive security software can block ansyswbu.exe from executing backend processes. Repair Microsoft Visual C++ Redistributables

In Mechanical, go to .

Corrupt solver or mesh files inside your project folder can trigger the crash: