Learning Forum

[Xbuddyin]

Dear Friends,

Recently, I have updated my workstation to new one, with high number of processor. I have following issue, when I run the same model in the 2019 R3, it give the option for the serial and paraller as processing option. Generally, I go for the serial. When I tired to run the same model in the 2022 R2 with the following processing option: Then I am encountering the above error "Fluent Application failed to validate the connection".

When I googled, I show the two solution, I am bit confuse if they are right or wrong:

A. /forum/forums/topic/the-fluent-application-failed-to-validate-the-connection-what-to-do/ : To Rename C:\Windows\system32\libmdd.dll (e.g. to libmdd.dll.old) may resolve the issue. I am not the adminstrator of the workstation. Also I am not able to find that file. 

B. To reduce the numner of the solver: https://www.reddit.com/r/ANSYS/comments/vieo79/the_fluent_application_failed_to_validate_the/ : I think In that case, I should have some number of solver in the block but it only shows the "solver process as 1" should I change it to 4 or 8 or with 40 logical processors:

 

Any suggestion will be helpful

 

[CFD_Friend]

Hi skdubey,

Maybe its the problem with liscence manager. Go to ANSYS Liscence Management center and try stopping and then restarting the Liscence manager. 

Or else check out this thread which adresses a similiar problem.

[Lee myungjun]

Maybe checking the "Show More Options - pre/post ~~" would be helpful

[Xbuddyin]

@vivek praveen: So should Install older verison.?

[Armando Rosales]

I had the same problem, solved it, in my case by changing the file path to one more direct to my computer's local C: drive and running the program as administrator.
i hope i helped

[Dana Kang]

Hi Armando, may I ask you how you changed your file path? 

I’m having the same problem and for some reason Fluent doesn’t let me change the working directory.