Ansys Troubleshooting Guide
Authored by Caleb Scharf December 12th, 2021 3512 views 1 likes KB965031
Table of ContentsA) Problem with a New Ansys Installation/LicenseB) Problem with Client Settings or PreferencesC) Problem Connecting to the License Server (Local or VPN)D) Problems Checking Out/Returning a LicenseE) Problem Caused by a Corrupt/Bad Ansys InstallationF) Problem Running Over Remote Desktop SoftwareG) Problem with Antivirus Blocking/Interfering With AnsysH) Problem With Outdated System Driversi) Problem is Unique to a Specific ModelJ) Problem is Caused by an Ansys Software BugK) Other Problems & Considerations
Troubleshooting Ansys problems can be tricky! Our comprehensive troubleshooting guide will help you narrow down the cause of any Ansys problem and walk you through how to resolve it. If you run into a problem caused by something not on the list below, let us know! - use the the feedback button in the lower right.
Note: This guide is not directly applicable to: Ansys Cloud, Rocky, Remote Solver Manager (RSM), Granta, SCADE, Minerva or Twin Builder at this time.
- First, search your exact error message in our Knowledge Base, which contains 100+ searchable articles and error messages/solutions.
- Next, ask yourself what changed, and begin to narrow down your problem using the list of common causes below.
Most Common Problems:
A) Problem with a New Ansys Installation/License
Skip this step if you're NOT dealing with a new/upgraded installation and the software was recently working.
- Did you install a new license? If so, are you using the most recent version of the License Manager?
- Verify you specified the correct License Server on the client computer.
- Did you add the necessary Firewall rules on your License Server?
- Did you right click the setup file and select "Run As Administrator" when installing?
- If you downloaded the software as a zip file package - did you extract the files before installing?
B) Problem with Client Settings or PreferencesThe following quick solutions reset basic Ansys settings back to default and resolve many common issues, particularly after installing a new license or software version along side other older versions.
C) Problem Connecting to the License Server (Local or VPN)Delete
D) Problems Checking Out or Returning a License
Additional Common Problems:
E) Problem Caused by a Corrupt Ansys Installation
Uninstalling and reinstalling the software can often resolve odd or persistent issues with the software. This can solve problems caused multiple possible things: subtle, but important installation steps being missed; bad settings not easily reset by other methods; broken dll registrations caused during windows or other software updates; corrupt files, etc.
F) Problem Running Over Remote Desktop SoftwareAre you running the software over Windows Remote Desktop, TeamViewer, GoToMyPC, etc.?
- Can you repeat the problem when working from the computer locally?
- If not, please contact SimuTech Support
- If so, please continue to the next step.
Note - connecting to a Linux machine via xrdp is not supported.
G) Problem with Antivirus Blocking/Interfering With Ansys
Some antivirus programs can prevent Ansys from running and or corrupt the Ansys installation files during an install. A common, but not only, symptom of antivirus related issues with Ansys is having an Ansys application crashing/closing or not opening at all when opened. We have not seen Windows Defender cause any issues with Ansys software, however, we have seen issues with other 3rd party AV products such as:
Identify Your AV Software
- If your computer is managed by your IT Department it's very common that, in addition to Window Defender, for additional 3rd party AV to be silently installed and is running in the background without appearing in the system tray or start menu. In this case, please contact your IT Department for assistance is both identifying and disabling the AV on your computer.
- Option for Power Users - open Task manager and review the process list to see if you can identify what AV product is running in the background.
Review AV logs
- If possible, review your AV software logs to see if it has blocked anything. Again, your IT Department may need to be involved as many AV's aren't configured to view logs locally.
- It's common for managed computers to have AV software block but not alert the user to any errors, so disabling your AV and attempting to reproduce the problem is recommended.
Temporarily uninstall or disable your AV software and attempt to repeat the problem
- The disable function in some AV products does not actually disable all features so we recommend uninstalling the software temporarily so you can be 100% confident when ruling out AV as the problem.
- Also note, attempting to disable the software by killing the process in task manager often does not work as AV products often restart themselves to prevent malicious threats from shutting down the process.
- Even if the problem repeats itself after your AV is uninstalled, the problem could have been caused during the installation and you must continue to the next step before definitively ruling out AV as the cause.
- Uninstall/Reinstall Ansys
Can you Reproduce the Problem?
- NO - AV was the cause. Reinstall or re-enable your AV software and work with your IT Department to have your AV allow Ansys.
- YES - We recommend continuing to troubleshoot the problem to resolution with AV disabled/uninstalled to ensure it isn't one of multiple problems occurring simultaneously.
H) Problem With Outdated System Drivers
Updating your bios firmware, chipset drivers and specifically the graphics/GPU drivers, have been known to solve both graphical and non-graphical problems with Ansys. These steps are generally considered beneficial even if they don't resolve the issue at hand as these updates insure optimal system performance, security and reliability.
- Dell System Owners - We recommend using Dell Command Update which will automatically check for and update all bios, chipset and system drivers for you, without having to download individual files.
i) Problem is Unique to a Specific Model/Project File
Is the issue isolated to a single model, software version, or computer? Please follow these steps sequentially.
- Can you repeat the problem using a different model on the same computer with the same software version?
- NO - this often indicates a problem with the model. Please continue with the next step if possible.
- YES - this often indicates a problem with the software installation (or possibly, but less likely a bug in the software). Please continue with the next step if possible.
- Can you repeat the problem with the same model on a different computer, running the same version?
- NO - this often indicates a problematic Ansys install or settings on the original computer. Please uninstall and then reinstall the software
- YES - this often indicates a problem with the model or possibly, but less likely, a bug in the software. Please contact SimuTech Support for further help from an engineer.
- Can you repeat the problem with the same model using a newer version of Ansys on the same computer?**
- NO - this often indicates a problematic Ansys install or a bug in the software. If using the newer version is not a permanent solution and you have already uninstalled and then reinstalled the problematic version of the software, please contact SimuTech Support for further assistance.
- YES - This often indicates a problem with the model. Please contact SimuTech Support for further assistance from an engineer.
J) Problem is Caused by an Ansys Software Bug
- Try repeating the problem in a different version of Ansys client software.
- If the problem persists, it's less likely there is a bug in the client software, however, if it's license checkout related issue, it may be a bug in the license server software.
- Try repeating the problem in a different version of the Ansys License Manager Software
- Gather Ansys Diagnostic Logs
- Contact and send the Diagnostic Logs to SimuTech Support.
Other Problems & Considerations:
K) Other Problems & Considerations
Here are several other items that to verify and consider:
- Check if Ansys client software is being blocked by the Client Windows Firewall (not server firewall)
- Verify your Windows Installation isn't corrupted - HOW TO - Check & Repair Windows Installation
- Verify Ansys prerequisite Microsoft software isn't corrupted - HOW TO - Manually Reinstall Prerequisite Microsoft Software
- Were any Windows or security updates recently installed the may be causing the issue?
- VPN software can sometimes causes issues, specifically we've seen issues with Cisco AnyConnect and Fluent as it relies on network settings.
Less common but other possible things to consider:
- Does your IT Department have any security or group policies that may be causing the issue?
- Does your IT Department having roaming profiles configured that may interfere with default installation locations? Contact SimuTech Support.
- Is there any windows file permission issues or warnings that indicate certain folders that Ansys installs to writes to may be restricted?