Installation & Licensing Center
Ansys Troubleshooting Guide
Authored by Caleb Scharf
November 6th, 2025
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6 likes
KB965031
Description
Find and fix the cause of any problem with Ansys products that use the Ansys License Manager with following the process of elimination below.
Process of Elimination
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1) License Server Connectivity Issue (Most Common)
Top 3 Causes
- The firewall on the License Manager or VPN is blocking communication.
- The license manager is out of date - different communication bugs are fixed in newer versions.
- The license server isn't specified properly or miss-spelled in the client license settings.
2) License Checkout Issue (Common)
Top 4 Causes
- Problematic Ansys settings that need to be reset back to default.
- Thinking you have a license checkout issue when you really have license server connectivity issue.
- The license manager is out of date - different communication bugs are fixed in newer versions.
- Your license is expired - HOW TO - Verify your license is valid and not expired
3) Software Doesn't Open/Run Properly
Does Ansys not open, crash, hang or throw non-specific errors? If so, this is likely a problem with the application or software it relies on. The most common causes and solutions of this are below.
Top 4 Causes
| Possible Causes (most to least common) | Solution |
|---|---|
|
Client settings/preferences are incorrect or corrupt
|
Reset Ansys Settings to Default
|
Corrupt Ansys Installation/Files
|
Re-run Ansys client installation by right clicking setup file and selecting Run as Administrator. No need to uninstall.
|
Outdated GPU, System Drivers or Windows Updates
|
|
|
Product/CAD Settings are missing/corrupt or miss-configured
|
Run Product & CAD Configuration Manager (5 min)
|
4) CAD Plug-in Related Issue
Possible Causes
- Client settings/preferences are incorrect or corrupt
- CAD Configuration Error
-
CAD Software/Version is Unsupported
- View Platform Support for 3rd party CAD compatibility
-
License Checkout Issue
- You don't have a license required to use the 3rd Party CAD plugin.
- Another License Checkout Related Issue
-
3rd Party CAD software isn’t functioning properly
- Needs to be re-installed, isn't getting a license, etc.
5) Project Specific Issue
Is the issue isolated to a single model, software version, or computer?
6) Incorrect Operation of Software
Ansys is complex. Even if the software is installed and operating properly, incorrect project settings or workflow can cause errors. Maybe something is being done one way, but Ansys needs it done in another, or simply doesn't support it. Maybe the model design or settings are not correct/compatible.
Please contact our engineering support team who will be happy to help establish what the expected behavior is and navigate you to a solution.
7) Other (RSM, HPC Clusters, Cloud & more)
Please contact our engineering support team with issues specifically related to:
- Hardware Recommendations
- Performance related questions & issues
- RSM (Remote Solve Manager)
- HPC Clusters
- Ansys HPC Platform Services (Next generation RSM)
- Ansys Cloud Burst Compute
- Ansys Gateway powered by AWS (Self Supported via Documentation & Ansys Learning Forum)
- Ansys Access on Microsoft Azure
- Centralized Software Deployment (SCCM/Intune)
- Software titles newly acquired by Ansys
- Ansys Cloud Direct (Legacy)
For further help…
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