Learning Forum

[Reece99]

When i try to open fluent within workbench it fails with the prompt fluent application fails to start. when i try to open fluent by itself it opens but never really loads. 

[tsiriaks]

Hi Reece99,

The error says it can't read certain file in the installation directory.

Did you install ANSYS with 'run as admin' ?

Check the permissions on your installation directory and make sure your username at least has read permission.

A potential temporary workaround might be to run Fluent with 'run as admin' .

Thanks,

Win

[Reece99]

I'm pretty sure i installed with run as admin and that my username have admin privilege. I got the same results when i ran fluent with run as admin 

[tsiriaks]

Something is wrong with your permissions. Please uninstall this and manually remove ANSYS Inc folder afterwards. Then re-install again, make sure you 'run as admin' and see if the issue persists.

Thanks,

Win

[Reece99]

I uninstalled and re downloaded ansys and it getting the same result 

[tsiriaks]

If you look at the console text output, this is now a different issue. It can now go farther but Fluent is still not completely launched , so the screen is still grey.

Try launching it with this mode

Processing Options : Parallel

Processes : 0

Does this help ?

Also, open CMD Prompt and issue this command

ping %computername% -4

and post the screenshot of the output of i

 

[Reece99]

fluent opened fully when i ran it parallel. Here is the command prompt 

[Reece99]

When i try to run it in workbench it opens and then the second i try to do anything it fails 

[tsiriaks]

Can you elaborate on this 'fail' ?

Is there any error message ?

Does it crash ?

 

What if you specify

Processing Options : Parallel

Processes : 2

[Reece99]

For both using processes: 0 or 2 i receive the same error each time:

fluent failed to start 

 

[tsiriaks]

Now, I'm confused.

What do you mean when you said "fluent opened fully when i ran it parallel."

 

[Reece99]

From what I could tell it appeared as though fluent opened and fully loaded, but once i tried to do anything the program crashed. 

[tsiriaks]

If you launch stand-alone Fluent, do you have any issue (try both 0 and 2 processors) ?

Your issue with Workbench-Fluent is because of that error "unable to connect to external socket, error during socket creation" . This is likely because Firewall or Anti-virus software on the machine is blocking this.

 

[Reece99]

Ok so It open and ran fine when i used o processors but i received this when I ran 2 processors

 

if the error on workbench is a problem with my firewall or anti-virus software, how would i fix that?

 

[tsiriaks]

so there is no graphics-related issue here (which was one of the main culprits I was thinking about)

All of these issues are related to your Firewall or Anti-virus software. Just for a test, turn every security software on your machine off temporarily and see if it works. If it works, then turn them back on one-by-one and see which one is the one that causes the issue, then make sure you add ANSYS Inc folder to the 'exclusions' list of that software.

[rchristensen]

I have been having the same issue with ANSYS 19.2 and 2019 R2. I have turned off the anti-virus as well as the firewall. But I still get the issue which states "Unable to connect to external socket: Error during socket creation". 

Thanks,
Rich

[tsiriaks]

Hi Rich,

I would recommend to create a new thread for your own.

There is still something blocking socket connections. Are you on VPN ? Are you using any remote desktop visualization tool ?

Do you see the same error if you launch it in non-GUI mode, something like

"%awp_root194%fluentntbinwin64fluent.exe" -r19.4.0 3d -g

Thanks,

Win

[rchristensen]

Hello Win,
I read on another forum that this can be solved by trying you use the fluent stand-alone from the "Component Systems" and then importing the model/mesh from another study. I did that and this resolved the problem. 

Since then, the application is finding looking up the correct license and is not giving me any issues. I don't know why this worked, but it seems to have resolved the issue for me. 

Thanks,
Rich

[tsiriaks]

Hi Rich,

That's very odd. Thank you for sharing the resolution.

Thanks,

Win

[mohanpannirselvam08]

Hallo everyone, I faced this same problem for past two weeks and finally solved it.

My Fluent keep pointing the error " Fluent application failed to start".

and in the Fluent log box says "Unable to connect to external socket: Error during socket creation Opening output fil".

Based on this I assumed there is a connection failure between a Host and client.

My set Up is a Client Side on Windows 10 with a VPN (Cisco) where i am receiving the license for Anysy from my university.

I did everything as mentioned turning off firewall, reinstalling as admin, reconfiguring my VPn. but neither was working.

 

Solution

In the end , i traced back the problem to my Hyper-V Virtual Adapter Ethernet. If you are a Android Studio developer most probably you have this one too.

Deactiavte it as i showed in this image. After that restart the pc and all error will not show again.