Can't open Unity Project: "child process exited with code 3221225477"

Hi.

I try to open a Project in a final state, wich build fine last week and I changed nothing since then. If I try to open it, the process is terminated after "Resolving Packages" disappears in the Launch Process. The only Error I was able to get, is the Hub info-log.json, which gives the info: "child process exited with code 3221225477".

Code (JavaScript):

1. {"moduleName":"LocalProject","level":"info","message":"[ 'openProject projectPath: C:/projectpath..., current editor:',\n  undefined ]","timestamp":"2020-06-18T12:30:37.307Z"}
2. {"moduleName":"RestEvent:Project","level":"info","message":"[ 'onProjectOpen data:',\n  { projectPath:\n     'C:/projectpath...' } ]","timestamp":"2020-06-18T12:30:37.307Z"}
3. {"moduleName":"LaunchProcess","level":"info","message":"[ '[B]child process exited with code 3221225477[/B]' ]","timestamp":"2020-06-18T12:30:45.173Z"}

(I just blacked out the path)
The "current editor: undefined" caught my attention, but its also missing in the projects wich run fine. Other Projects open as expected.

Hub Version is: 2.3.2
Unity Version is: 2019.4.0f1
Platform: Windows 64

I don't know how to proceed...

Best,
Daniel

 

I'm having the same issue.

Hub version: 2.3.2
Platform: Windows 64

I have the following Unity versions installed:
2019.4.2f1 (LTS)
2018.4.16f1 (LTS)
2018.2.12f1
2018.2.0f2
2018.1.9f2
2017.1.1f1

the issue DOESN'T occur with both LTS versions. In all other versions I have the issue.

I already tried:
- Uninstalling and Installing Unity 2018.1.9f2.
- Removing the ProgramData/Unity folder
- Removing all Unity folders in AppData/Roaming/
- Removing and reactivating Unity Pro license.

 

When I was doing my project, Suddenly My unity editior shut down and window rebooted.
After rebooting,I'm having the same issue.

Hub version: 2.4.0
Platform: Windows 64
Unity version: 2020.1.4f1

I think that error may be occured from ECS packages. Because when i tried to open my unity editor, it always ended with Initialize package state and I never had such problem before I've started using ECS packages.

Can anybody help?

 

im also having this issue. ive tried to reinstall it completly. I had some luck with disabling wifi adapters and ethernete adapters on windows but im not sure if i was just lucky. Ive tried to delete all registrys with unity too. This is annoying

 

I delete the "Library","Logs","obj" and "Temp" folders. And it works for me.Perhaps you guys can try it.

 

It worked! Many thanks!

 

Works for me too! thanks!

 

I've deleted all C++ redistributables (recommended here) and installing the latest (and restarting), and tried deleting these files as well to no avail. Creating a brand new project doesn't even work, I just keep getting that error code in the logs.

Unity Hub 3.2.0
Unity 2021.3.2f1 LTS
Unity 2022.1.6f1

Any other suggestions?

 

Same here, deleting the folders didn't solve the issue.

Hub 3.2.0
Unity 2020.3.37f1
Unity 2021.3.4f1

 

What fixed it for me was returning my license and activating a new one. (personal license for me)