help > Multiple Conn remote connection issues
Feb 17, 2026  12:02 PM | Joshua Neal - Virginia Tech
Multiple Conn remote connection issues

Hello,


I'm reaching out because I have a M1 Macbook Air running Matlab R2024b and CONN toolbox 22.v2407. I have been attempting to use it as the client computer for either of two different computers - an Ubuntu Cluster, and a personal Windows PC. 


For the Ubuntu cluster, the remote connection works up to the "This may take a few minutes, please be patient as your job currently sits in a queue. CONN will resume automatically when the new Matlab session becomes available" prompt. When I manually ssh into this cluster, I have to enter two separate passwords - first a general password, then a university account specific password. For the Conn remote connection I have been entering the first password, but am not given a prompt to enter a second. Is there a configuration option on my end that I could utilize to get both passwords entered and fulfill the connection?


For the Windows PC, I simply get the following error when attempting the remote login: 
"Reading configuration information from jnnea@100.74.53.80:~/connserverinfo.json to /Users/joshneal/.conn_cache/conncache_27de0c9542e2f7f30a24833d879248a1


Unable to find CONN distribution in jnnea@100.74.53.80.


If this is your first time connecting to 100.74.53.80, please use the following steps to confirm that CONN is available there and then try connecting again:


   1. Log in to 100.74.53.80 as user jnnea


   2. Launch Matlab


   3. From Matlab command-window type "conn remotely setup" (without quotes) and confirm that the file ~/connserverinfo.json is created


   4. Log out from 100.74.53.80


(see "in the server computer" section at https://web.conn-toolbox.org/resources/r... for details)


 


Try connecting again to jnnea@100.74.53.80? (yes|no) :"


This has occurred multiple times, in spite of generating the connserverinfo.json file repeatedly, inlcuding through ssh connection from the Mac to PC. Is there a compatability issue with Windows as the CONN server, or is there another troubleshooting process I can try here?

Appreciate any help with either or both connections.


Thanks,


Josh