Installation - Recent Threads

Resolving the 'RwBoundsErr' error in Fidelity Fine Turbo 2025.2: A PVM-related issue

Gaurav — Tue, 10 Mar 2026 07:05:03 GMT

This article discusses a common issue faced by users of Fidelity Fine Turbo 2025.2, where an 'RwBoundsErr' error message appears when attempting to run the solver. The article identifies the root cause as a PVM issue and provides a step-by-step solution to resolve the error.

Resolving the 'RwBoundsErr' error in Fidelity Fine Turbo 2025.2: A PVM-related issue

How to prevent Fidelity 25.2 GUI crashes caused by NVIDIA driver bugs?

Gaurav — Wed, 25 Feb 2026 06:31:38 GMT

This article describes a few crash issues with the Fidelity version 25.2 GUI caused by NVIDIA driver bugs. It recommends updating the NVIDIA graphics driver to version 581.80 or newer and changing key NVIDIA Control Center settings (GPU selection, power mode, threaded optimization, V‑Sync, and antialiasing) to fix the problem.

https://support.cadence.com/apex/ArticleAttachmentPortal?id=a1OPP000002P90X2AS&pageName=ArticleContent

Error 'Failed to load module "xapp-gtk3-module"' when running 'install_manager_fidelity_LINUX_2025.1-1.exe' in Fidelity CFD 2025.1-1

Gaurav — Tue, 02 Dec 2025 06:10:48 GMT

Are you experiencing issues with the xapp-gtk3 module in your Linux Mint 22.2 operating system? Does your system throw an error message indicating the absence of this crucial module? The missing xapp-gtk3 module error can be frustrating, especially when you're not sure what's causing it. This issue often arises due to the absence of necessary drivers or missing libraries in specific configurations.

If you're affected by this problem and looking for a solution, check out our article (link below), which provides a step-by-step guide to resolving the missing xapp-gtk3 module error. Learn how to identify and fix the issue, and get back to using your Linux Mint 22.2 system without any hiccups.

Error 'Failed to load module "xapp-gtk3-module"' when running 'install_manager_fidelity_LINUX_2025.1-1.exe' in Fidelity CFD 2025.1-1

How to resolve "Aborted (core dumped)" error in Fidelity CFD

Gaurav — Thu, 27 Nov 2025 06:29:41 GMT

FIXED: Common Linux Error - How to Troubleshoot & Resolve Issues on Ubuntu & Rocky Linux. Are you getting this frustrating error message on your Linux system? Check if you're using affected versions, such as Ubuntu 20.04, 22.04, and 24.04, or Rocky Linux 8.5. Discover how missing libraries can trigger this issue and learn the solutions to get your system up and running smoothly!

How to resolve "Aborted (core dumped)" error in Fidelity CFD

How to resolve "Stop request failed (34)" error in Fidelity CFD 2025.1

Gaurav — Mon, 17 Nov 2025 07:42:53 GMT

How can Fidelity users overcome a situation where they encounter the error message "Stop request failed" when attempting to unload results within a simulation context?

How to resolve "Stop request failed (34)" error in Fidelity CFD 2025.1

CFD Student License installation error

lkwenda — Sat, 18 Nov 2023 07:44:36 GMT

Hello,

I've been trying to get started with installing the cfd student software as instructed by the license file I received. Whenever I try to go to this website http://downloads.cadence.com i get a 403 error and Im not entirely sure how to solve this problem.

RE: CFD Student License installation error

FB202508207755 — Thu, 21 Aug 2025 11:11:54 GMT

Hello,

I already have access to a virtual machine with Cadence.

However, I am facing a memory issue, so I would like to download the software locally and run my tests on my personal computer.

I am experiencing the same issue when trying to access the download page.

Could you please assist me with this matter?

Thank you in advance for your help.

Best regards,

How to apply static TCP ports for Flow Solver and Fidelity licenses using Admin Tool on Windows

Gaurav — Mon, 28 Jul 2025 07:41:57 GMT

How to apply static TCP ports for Flow Solver and Fidelity licenses using Admin Tool on Windows

This article provides a step-by-step guide on how to utilize both Flow Solver and Fidelity license files effectively. The user's environment includes a Windows-hosted license server and clients operating on both Linux and Windows systems. The goal is to ensure seamless connectivity between the license server and clients. To achieve this, it is crucial to configure static ports for vendor daemons, specifically cdslmd and isiscfd. This article aims to overcome these issues, making the license features of Flow Solver and Fidelity accessible to all clients.

Assistance Required for NUMECA License Server and FlexNet License Finder Issues

MJ202501068146 — Thu, 09 Jan 2025 17:43:28 GMT

Dear All,

I am writing to request your assistance with a persistent issue in configuring the NUMECA License Server on my system. Despite following the recommended troubleshooting steps, I have been unable to resolve the problem and need your guidance.

I would like to note that I have never encountered such an issue with NUMECA software before, and this has been an unexpected challenge for me.

I have suddenly received this message when I opened Fineopen ""

FlexNet License Finder

Your application was not able to obtain a license because the FlexNet license server manager could not determine where to find the licensing data it needs. Please choose one of the following:

Specify the License Server System
Specify the License File

[Cancel] [<Back] [Next]

System and Configuration Details:
- Operating System: Windows
- NUMECA Version: [FINE/Open 9.2]
- License File: any.lic

Issue Description:
When attempting to launch the NUMECA application, I am prompted with the FlexNet License Finder dialog.

Request for Support:
I kindly request your help in diagnosing and resolving this issue. If needed, I am happy to share the debug.log file or provide additional information about the setup.

Please let me know how to proceed. Your prompt response would be greatly appreciated, as this issue is impacting my work.

Thank you for your time and support.

Best regards,

Actions Taken:
1. License Server Setup:
   - Updated the any.lic file as follows:
     SERVER [Add Server Details]
     VENDOR numeca C:\NUMECA_SOFTWARE\License_management\numeca.exe
   - Verified that the lmgrd process is running successfully using:
     lmgrd -c any.lic -l debug.log

2. Network and Connectivity:
   - Successfully pinged the hostname and IP address.
   - Confirmed port [Add Port] is open and listening using netstat.
   - Attempted telnet [Add IP Address] [Add Port], but the connection failed.

3. Firewall Rules:
   - Added inbound and outbound rules for port [Add Port] (TCP).

4. Diagnostics:
   - All checks in the NUMECA Admin Tool diagnostics passed, including license validity, activation server reachability, and trusted storage installation.

5. Debug Log Analysis:
   The debug log indicates the following error for the numeca daemon:
   "The desired vendor daemon is down. (-97,121)"

RE: Assistance Required for NUMECA License Server and FlexNet License Finder Issues

MJ202501068146 — Thu, 16 Jan 2025 22:38:02 GMT

Thank you so much for your support.

RE: Assistance Required for NUMECA License Server and FlexNet License Finder Issues

Gaurav — Mon, 13 Jan 2025 05:47:06 GMT

Hi,

I encourage you to explore the following websites:

https://www.cadence.com/en_US/home/company/cadence-academic-network/students.html

You can click "REQUEST ACCESS" under "FREE STUDENT SOFTWARE."

RE: Assistance Required for NUMECA License Server and FlexNet License Finder Issues

MJ202501068146 — Fri, 10 Jan 2025 09:56:04 GMT

Dear Gaurav,

thank you for your response,

I am a student working on aerodynamic simulations and would like to know how to obtain a free student license for NUMECA.

Thank you for your guidance.

RE: Assistance Required for NUMECA License Server and FlexNet License Finder Issues

Gaurav — Fri, 10 Jan 2025 07:40:27 GMT

To begin, please reach out to the sales team to request the issuance of a new license file. The Fine/Open version 9 is significantly outdated and may not meet our current needs. To find the most recent and relevant versions available, go to the website downloads.cadence.com. There, you can browse and download the latest software versions that suit our requirements. Be sure to check for any release notes or updates related to these versions to ensure compatibility and access to new features.

RE: Host VDH

NPITSean — Wed, 21 Aug 2024 04:29:24 GMT

I have found why it is happening. When I install only Marine, it worked without any problem. But as soon as install other software VDH was disappeared. Only Licence_Manager Version 11.17.1.0 shows VDH. Now I installed other software first then I deleted the rest of Licence_Manger except Version 11.17.1.0 which was installed with Fine/Marine. this way the Marine Solver works. This is so far what I have found out.

Host VDH

NPITSean — Mon, 19 Aug 2024 01:41:38 GMT

Marine solve isis license requires VDH. is there any way to resolve this matter?

RE: Host VDH

Colinda — Tue, 20 Aug 2024 09:52:33 GMT

Can you launch the Command prompt as administrator and try to launch the executable that gets the vendor defined hostid through:

c:\cadence\license_management\isiscfd_hostid.exe

That should print a few lines to the command prompt including the vendor defined hostid on that machine.
If it doesn't, what is the error message that is printed?

If that does provide the vendor defined hostid, could you please try run the Admin Tool as administrator. in that case it should the vendor defined hostid?

Temporarily turn of your anti-virus and firewall to make sure these are not blocking isiscfd_hostid.exe or isiscfdd daemon.

RE: Host VDH

NPITSean — Tue, 20 Aug 2024 02:20:51 GMT

I have got the 2 license for marine. with Fidelity license I can use Marine before the simulation. Until Meshing). Also for the flow solver, I have got the ISISCFD license which has been issued new.
using Marine 12.1-4
OS is Windows 10
The VDH field in the Admin Tool under Product (de)activation is totally empty.

RE: host VDH

Colinda — Mon, 19 Aug 2024 12:38:16 GMT

Indeed, the Fine Marin solver does require VDH. Could you please provide more information on your question related to the VDH:

Do you have already the two license files needed for Fine Marine: one with the cdslmd daemon and one with the isiscfdd daemon?
Which Fine Marine version are you using?
Which is the OS version?
What does the Admin Tool provide as a VDH under license management in the Product (de)activation tab?

RE: CFD Student License installation error

lkwenda — Sun, 14 Jan 2024 22:05:36 GMT

I was able to get the everything working after fixing the autorestart feature and described above!

As for the wifi issue, I uninstalled and reinstalled everything to the latest version and that seemed to resolve the problem.

RE: CFD Student License installation error

Colinda — Thu, 11 Jan 2024 10:30:28 GMT

Hi,
Great that you could fix the Wifi issue. May I ask what you have changed to make it work? That could be interesting for others as well if facing the same.

For the Autostart feature, could you please do the following:

De-activate the license through the Admin Tool;
Close the Admin Tool;
Run the command sc delete "Numeca License server” on the command prompt (Might be required to run as administrator);
Kill the task “lmgrd.exe” through the Task Manager if it’s running;
Try to activate the License server again (with the Admin Tool run as administrator).

RE: CFD Student License installation error

lkwenda — Mon, 08 Jan 2024 21:57:09 GMT

Hi,

I was able to get the admin tool working after changing my wifi network. The only problem I current have is the autorestart setting that isn't turning on. I tried running the admin tool as an administrator and it still isn't working. Is there any way to go about this?

RE: Download Page Error

Colinda — Wed, 13 Dec 2023 08:26:30 GMT

Hi,

Could you please try again; it should be fixed now.

Best regards,
Colinda

Download Page Error

Amine67 — Tue, 12 Dec 2023 11:25:01 GMT

Hello,

Could you please help me with an error I encountered in the downloading step of FidelityCFD from the Cadence download page downloads.cadence.com. I received the student licence file and I was told to download the software from that link.

Here is a picture of the error.

Thank you in advance.

RE: Download Page Error

Amine67 — Tue, 12 Dec 2023 15:16:41 GMT

Thank you for the reply

RE: Download Page Error

Colinda — Tue, 12 Dec 2023 12:53:07 GMT

This error 403 "App not assigned" in English, is likely due to a mistake in your account that requires a correction.
I will ask for such correction and inform you when it is done.
In case somebody else reads this and has exactly this same problem: please contact academic-cfd@cadence.com

Best regards,
Colinda