-
-
July 11, 2023 at 11:26 pm
James Szeszycki
SubscriberThe FLUENT application hangs for quite some time upon start up but then I receive the following error: "The FLUENT application failed to validate the connection.". Tried many of the suggestions in revious posts from older versions of the software. Currently using R1 2023 Student version. Any help would be appreciated.
Please see the below sceenshots of the error:
Startup settings:
-
July 12, 2023 at 12:28 pm
Federico Alzamora Previtali
SubscriberIs this 23R1 version a new install? Has Fluent 23R1 worked previously for you? Are you able to open Fluent 23R1 in standalone mode (directly from the Start menu)?
Do you have previous versions of Ansys products installed on your machine?
-
July 12, 2023 at 9:35 pm
James Szeszycki
SubscriberHi, it is a new install. Fluent 23R1 has not worked previously as it is my first attempt to open it. I actually can open fluent directly from the start, not from the workbench. I also dont have any previous version of Ansys software installed.
-
-
July 13, 2023 at 12:52 pm
Federico Alzamora Previtali
SubscriberHello James,
Can you try the following?
Close all the Ansys applications.
Go to Start>search “Product and CAD Configuration 2023 R1” and run it as admin.
Follow the below steps: (while configuring products and unconfiguring products “select all” option)
- Install Required Prerequisites.
- Unconfigure Products & CADs.
- Configure Products & CADs.
Rename the Ansys folder to Ansys.old (search %appdata% in Windows File Explorer search bar) and .ansys to .ansys.old (%temp%)
Launch the application again.
Let me know if the above solutions work for you.
-
- You must be logged in to reply to this topic.

Boost Ansys Fluent Simulations with AWS
Computational Fluid Dynamics (CFD) helps engineers design products in which the flow of fluid components is a significant challenge. These different use cases often require large complex models to solve on a traditional workstation. Click here to join this event to learn how to leverage Ansys Fluids on the cloud, thanks to Ansys Gateway powered by AWS.

Earth Rescue – An Ansys Online Series
The climate crisis is here. But so is the human ingenuity to fight it. Earth Rescue reveals what visionary companies are doing today to engineer radical new ideas in the fight against climate change. Click here to watch the first episode.

Ansys Blog
Subscribe to the Ansys Blog to get great new content about the power of simulation delivered right to your email on a weekly basis. With content from Ansys experts, partners and customers you will learn about product development advances, thought leadership and trends and tips to better use Ansys tools. Sign up here.
- Not seeing any items in the ANSYS Workbench toolbox?
- Missing Analysis Systems from toolbox
- “An error occurred while starting the solver module.” – Maybe licence problem?
- Please recommend the configuration of the computer workstation
- FLUENT application Failed to start
- No license available at this time
- ANSYS License Manager Error
- I am using MacBook Pro with M1chip, how can I install or any other ways to use Ansys ?
- Your product license has numerical problem size limits…..
- Acoustics model in Ansys 18.1
-
7626
-
4456
-
2955
-
1427
-
1322
© 2023 Copyright ANSYS, Inc. All rights reserved.