Learning Forum

[239487]

Hello, by merely glancing through the forum I have encountered numerous posts regarding this problem, none resolved. To list some: 1 2 3 4 5 6 7 and countless more have been troubled. I am referring to the "application failed to connect" error message that pops up whenever I attempt to launch Fluent Post of CFX-Pre. I am attaching screenshots to this post but feel free to refer to the other threads as the problem is more or less the same. I have just reinstalled the entire Ansys suite (while thoroughly wiping all "left-overs" from my computer before proceeding with the installation in a very cautious manner and am positive no corrupts ought to have happened twice in a row. I am running the latest version of 2022 R2 (despite the problem occurring since the 2020 versions and later) on the latest Windows 11 and latest hardware driver updates. Re-installation had no effect, and neither did deactivating my antivirus alongside my firewall (as done during the installation). I can run CFX by executing a command and launching the stand-alone application but whenever I attempt to import an external mesh I am greeted with a message saying there is no instance of Workbench running (which there is). All things considered, I should be able to run CFX and POST directly from Workbench without having to find workarounds.

Thank you for your support, I hope that by resolving this thread we can help future Ansys customers prevent this problem from blocking them in their work.

Kind regards, Tomas J

[MangeshANSYS]

Hello,

Have you tried closing out of Workbench and CFD Post and renaming the .cfx folder in C:\users\%username%\ folder as mentioned in those threads ?

 

[239487]

Note:

The solution seems to be Changing the Default folder for permanent files in the settings. As noted almost at the bottom of this Post. There is no need to reinstall the software, change Environment variables, or change the version of CFX. Sometimes the default settings can be to blame.