Licensing Connectivity / Checkout Issue

• Licensing Connectivity and Checkout issues should be ruled out first and are NOT an Installation / functionality issue.

• Test & Fix FlexNet License Manager Connectivity Issues 
• Fix Ansys License Checkout Issues 

Client settings/preferences are incorrect or corrupt

• Forced shutdown of application/OS.
• Installing a new license or software version alongside older versions.

Reset Ansys Settings to Default 

Re-run Ansys client installation by right clicking setup file and selecting Run as Administrator.  No need to uninstall.

Update Drivers & Software

Corrupt Ansys Installation/Files

• Antivirus / Endpoint Detection (AV/EDR) blocked files during the installation (if often does this silently).

Troubleshoot Antivirus/EDR Software with Ansys

Corrupt Ansys Installation/Files

• Broken .dll registrations can be caused during windows or other software updates, corrupt files caused by forced shutdowns, incorrect settings not easily reset by other methods, corrupt temporary files or registry settings.

Comprehensively Reinstall Ansys

Product/CAD Settings are missing/corrupt or miss-configured

Run Product & CAD Configuration Manager‍ (5 min)

Antivirus / Endpoint Detection (AV/EDR) Actively Blocks Ansys

• This can block Ansys or files it relies on from running (this often occurs silently)

Troubleshoot Antivirus/EDR Software with Ansys

Corrupt or missing Microsoft Visual C++ pre-requisite files

• Bad Windows update, application crashes, forced shutdowns, faulty hardware.

Reinstall Microsoft Visual C++ pre-requisite software

Remote Desktop Software (Windows RDP, TeamViewer, GoToMyPC, etc.) is causing issues.

Note: Connecting to a Linux machine via xrdp is not supported by Ansys. Remote Display Support 

Can you repeat the problem when working from the computer locally?  

• If so, the problem is not related to remote desktop software.  If not, please contact SimuTech Support, however, it's possible your remote software may not be supported.

Ansys software bug

Eliminate your Model, Ansys Version & Computer as the Cause, then contact SimuTech Support.  SimuTech will then troubleshoot the specific symptoms based on screenshots and logs that you send.

Corrupt Windows Installation

• Bad Windows update, faulty hardware, Windows Rot, Windows Updates, application crashes, forced shutdowns, faulty hardware.

1. Check Windows Event Logs for System Errors.
2. Check & Repair Your Windows Installation
3. Comprehensively Reinstall Ansys if errors were found.
4. Reinstall Windows if Windows errors cannot be resolved or the issues persists. 

Misc Fluent Issues

• To help narrow down the issue, the following items can be ruled out. 

• Disable your WiFi adapter, if present.
• Disable the Firewall
• Set the number of solver processes to 1 in the fluent launcher.
• In the Fluent launcher > try both Enabling and Disabling Double precision.
• In the Fluent launcher > Parallel Settings > Change the MPI Types try both msmpi and intel MPI
• Disable Hyper-Threading in the computer bios.