I get the following error:
Cannot connect to the MongoDB at <my ip here>.
Error:
Network error while attempting to run command 'saslStart' on host '<my ip here>'
I have four servers under my control, and I can connect to two of them running v3.6 and v4.0, and cannot connect to the other two running v4.2.
Sadly I was unable to spot anything obvious in the mongodb release notes at https://docs.mongodb.com/manual/release-notes/4.2/
the same issue. on 3.6, 4.0 works as expected but on 4.2 i have the same error. I use ssh connection

I connect to db using my project (nodejs) and it works so it means that all credentioals are specified correctly.
I remember some time ago there was the same problem with previous versions of mongodb and it was fixed.
found one possible solution:
https://github.com/Studio3T/robomongo/issues/1590#issuecomment-475954939
but i can't regen my ssh so if someone tries it please let me know
I also faced the same issue.
Download and install latest version of Robo 3T will solve this problem..
It works, thanks) weird, that it's not updated automatically, at least some time I have a notification that it can be updated. nevertheless the problem is solved
Same for me, I somehow managed to not check the version number before raising this issue.
I've updated to the latest version and all works fine.
Most helpful comment
I also faced the same issue.
Download and install latest version of Robo 3T will solve this problem..