Failed to start Unity PackageManager

I tried that already. I have neither a proxy, a firewall nor an antivirus software set up, my Unity installation path also doesn't contain an

#

or a

'

and manually starting the UPM didn't change anything either.

What should I do now?

 

Guys, i have the same problem with Unity 2020.1.16 and 17. Last working version was 15. It must be something different in the newer versions, because i'm using Unity on two computers from the begining of 2020.1.0 and never had an issue with it. Then came 2020.1.16 and on both machines (different ISP, different PC specs) i have the same error:

UPM health check (FAIL)
Start the UPM process and call its health endpoint
>> Server exited unexpectedly. Exit code: 216

If i roll back to 2020.1.15 everything works great again...

 

Yes, exactly Windows 7. And yes, after introducing new variable (NODE_SKIP_PLATFORM_CHECK to 1) it is working fine, thank You!

 

Thanks for your reply. I'm sorry for my late response. I could fix the issue but it seems like the crash was related to this issue and had nothing to do with UPM. UPM launches fine and also responds correctly in the browser. This is the upm.log file:

Code (CSharp):

1. [2020-12-15T18:09:06.762Z][INFO] Creating server instance
2. [2020-12-15T18:09:06.789Z][INFO] Starting Server
3. [2020-12-15T18:09:06.793Z][INFO] Server started on port [37113]
4. [2020-12-15T18:09:06.961Z][INFO] Health Request received
5. [2020-12-15T18:09:07.119Z][INFO] Resolving dependencies using SAT solver
6. [2020-12-15T18:09:21.774Z][ERROR] [Unity Package Manager (Upm)] Parent process [20551] was terminated

 

My game uses a script to generate save files using files stream. I made some changes to a class that the file reader cannot understand when compared to the save file. Since it ran on awake, it always caused unity to crash until I commented it out.

 

I off all may Ethernet adapters, and one project (version 2018.4.30f1) run with this error. After i returning adapters setting, project start running without error.

 

i have the same problem when i run unity its giving me the same problem and i didn understand any of this too(im using unity 2020.2.6f1 64 bit)

 

When upgrading a project from 5.4 to 2017.4.20f1... I started facing similar issue. Tried many approach. Still resulted the same.. Then checked with 2017.4.22f2. Same issue...

Error I was facing:

Process terminated abnormally
rdhiraj_ck_2017 rdhiraj$ [Unity Package Manager (Upm)]
Parent process [9961] was terminated

or

[Package Manager] Server::Kill -- Server was shutdown
Cleanup mono

-----------------------------------------------------------------------

I'm using mac and i was running unity from command line with param -nographics.
I tried all the approach like adding NO_PROXY, signout and restart unity hub.. nothing helped..

For people who are running with similar setup.. Try removing the "-nographics". It might work.
It worked for ME
Hope it might help someone.
Thanks

 

If you are still facing this issue, it is caused because Windows Firewall is blocking the unity servers from connecting to the client (Unity) so open up windows firewall settings and click on advanced on the left side menu, then The Unity Editor with version under inbound rules should have an icon that is red(blocking connections) so right clicking on the Unity version and click properties, then select the "Allow the connection" box and click apply and that should work!

 

I've just wasted several hours on this error, tried everything from uninstalling to redoing the firewall rules, and turns out it was my damn VPN! (Surf Shark). Turned it off and it works like a charm now