Locate the directory named and rename it to .ansys_OLD .
ANSYS components (especially the HPC MPI libraries) get corrupted by antivirus software or incomplete updates.
ANSYS Workbench is extremely sensitive to file paths. Locate the directory named and rename it to
Troubleshooting the "AnsysWBU.exe encountered a problem. A diagnostic file has been written" Error in ANSYS Workbench
The error message is a critical, generic crash notification that occurs when Ansys Workbench components (like Mechanical, DesignModeler, or Meshing) abruptly terminate . It indicates that the main Windows executable framework for the user interface ( AnsysWBU.exe ) encountered an unhandled exception and generated a memory crash dump file ( AnsysWBDumpFile.dmp ) in your local temporary directory. Troubleshooting the "AnsysWBU
Fortunately, because this issue has been thoroughly diagnosed across engineering teams, several definitive fixes can restore your environment back to working order. 1. Quick Fix: Clear the User AppData and Temp Profiles
: Intel OpenMP runtime libraries ( libiomp5md.dll ) placed inside Windows system folders by third-party software conflicting with Ansys binaries. turn them off
Certain advanced settings can crash the solver reliably. For example, enabling “Large Deflection” on a model with poorly constrained degrees of freedom may cause the solver to iterate to infinity. Using a direct solver (e.g., Sparse) on a model with billions of degrees of freedom will exhaust memory faster than an iterative solver. Requesting unrealistic time steps in a transient analysis can also lead to numerical overflow. Solution: Simplify the analysis first. Start with linear, static, small-deflection assumptions. Gradually add complexity while saving intermediate results.
Open Windows Explorer and type %appdata% in the address bar.
If you have enabled any "Beta" features in the ANSYS options, turn them off, as these are prone to triggering diagnostic dumps. 5. Review the Diagnostic File
: Avoid non-English characters (e.g., à , ° ) in the project name or file path.