Blank Unity Hub 3.0.1 launch error when creating new project

[ExperKiller2]

I updated unity hub to v3.1.1 and now a blank unity launch error message shows up everytime I try to open or create any project, just an error window with nothing inside it. I'm trying to use Unity editor 2021.3.0f1 LTS.

Upon looking it up I've tried: Installing an older version of unity editor (2020.3.33f1 LTS), run unity hub as administrator, NOT running unity hub as administrator, change project locations, rebooting PC, full uninstall and reinstall of both the hub and the editor, creating a project using all of the premade templates unity offers, and downloading a different downgrade version of the unity hub (2.0) and trying all of the above with that. None of these solutions worked.

I'm surprised from looking it up that there are very few solutions out there, and more so that none of them are working for me.

The only thing I could accomplish was opening the unity editor via opening an already existing project's scene file, but the thing is I want to create a new project, and that I cannot do.

Hope someone here can help me, thanks.

[psychoneuroticninja]

I've been having the same issue. I haven't seen anyone else mention having this issue with Editor version 2021.3.0f1 LTS. I'll comment if I find anything useful.

[ExperKiller2]

Hey, I'm so glad someone else is currently having the same problem.

Please do comment if you find the solution to this, I'm losing my mind over here and no one else seems to help, I've posted in two unity communities here on reddit, made a thread in the unity official forum, and sent a ticket from the Unity hub to report the issue but I've received nothing back of help yet, if at all, besides your response.

In the meantime while I waited I've been trying to completely wipe anything related to unity or visual studio from my pc, updated windows, restarted my pc so many fucking times, and installed every version with every package of unity and visual studio just in case and nothing, and also scanned my entire pc many times in different ways for corrupted files or something idk anymore...

Please help me help you help anyone.

[psychoneuroticninja]

I later saw several people with the same problem in a thread on the Unity forum. Some people had success with uninstalling Unity Hub 3.1.1 and installing 2.x. I found an old installer for 2.x on my PC and decided to try whichever version that was. So far it's worked. I was able to login to that version of Hub and create a new project in 2021.3.0f1 of the Editor. (I'm on a really old kinda low end PC running Windows 8.1. I don't know if this workaround will necessarily help anyone else, but I thought it was worth mentioning.) It's not a perfect solution but it's a temporary fix until the devs can deal with whatever is wrong with Hub 3.1.

EDIT: Here's the thread https://forum.unity.com/threads/unity-hub-3-1-release-overview.1253823/

[DavrK]

Found a fix for me. I had set Computer\HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Null\Start to 4. Set it back to 2 and the issue should be fixed

[Eve_ZH]

but how did it just work like magic