I am using unity hub 2.2.2 with unity 2019.2.18f1. It can create a new project, but failed to open an existing project. When I click on an exist project, it jumps to the unity-start-up-picture and goes back to unity hub later.
How to fix the problem?
Hi, may be you have to re-install it. For me was imposible to add an existing project. The solution I found is to create a new project, then close it, and try to add existing project. Worked for me. I hope you find a solution soon.
I have the exact same issue. The unity editor will not open a project and I get returned to the hub screen. I suspect it’s a problem with the license. Can we get some unity support on this issue? The editor failing to open with no error message is unacceptable.
Same here, reinstall didn’t help I am not able to use unity with Personal or Pro license 
I’ll move this over to the Hub forum so the team there can take a look.
I’m having the same problem. I’m getting a pop up saying “Project failed to open” And before that it said “Unable to create project”.
Same here won’t open project
Same here with unity 2019.4.5f1, I sent a message some days ago with the same problem.
Mi “solution” is update the project to 2019.4.14f1 and fix al errors/incompatibilities. For now, it works for this project, the problem is that we have a lot of projects with this version and we cannot update all projects to a new Unity version and fix all incompatibilities…
Seems that old unity versions can’t detect the license or the unity hub installation, I reinstaled the unity hub and the beta version and has the same problem… seems there’s a problem with som references with unity hub and old unity versions.
Please fix it… or sent a posibility to download old unity hub versions.
I`m having the exact same problem as @DJakaj I create a new project, and it appears on My Projects, when I try to open I get the same error message
Try to change the project path to C:\users\username\ this fixed it for me.
Nope, doesn’t work
don’t you just hate it when you’re trying to find a solution, and everyone is just saying “Same here”
I just found out that Unity is not even saving the project on the disk i checked and windows found nothing. I think this might be the problem
did anyone fix this problem? I got the same!
same 
Same problem…
Unity Hub 3.1.1, Unity Editor 2020.3.31f1
I solved the problem.
I downloaded Unity Hub 2.4.5 and downgraded the software from 3.1.1 to 2.4.5.
Now it opens all projects correctly and I have no more problems.
how did u downgrade??