[ZeinabM]

Hello all,
I hope you're doing good. I was running a case in parallel, and I got the following error. It's not my first time running a case in parallel. I checked another case to make sure that the problem is not in the case directory, but I got the same error message. Thank you for your help.

Application : pimpSuzFoam (4 processes)
Output      : log
Executing   : /opt/OpenFOAM/OpenFOAM-v2012/ThirdParty/platforms/linux64Gcc63/openmpi-4.0.3/bin/mpirun -n 4 /opt/OpenFOAM/OpenFOAM-v2012/bin/tools/foamExec pimpSuzFoam -parallel
[DESKTOP-T88LCC7:00925] opal_ifinit: unable to find network interfaces.
[DESKTOP-T88LCC7:00925] pmix_ifinit: unable to find network interfaces.
[DESKTOP-T88LCC7:00925] ptl_tcp: problems getting address for index 0 (kernel index -1)
[DESKTOP-T88LCC7:00925] oob_tcp: problems getting address for index 0 (kernel index -1)
--------------------------------------------------------------------------
No network interfaces were found for out-of-band communications. We require
at least one available network for out-of-band messaging.
--------------------------------------------------------------------------

[ZeinabM]

Hello, I've successfully solved the problem. It turned out there was a problem in wsl, so I just shut it down from the PowerShell and restarted it again, and now it's working. It turned out it's a common problem on wsl2.