Could not establish connection with unity package manager

Maybe someone can find a soultion to this problem?
This error shows me even if I’m online and I need to try 5+ times to open my project.
133749-a.png

I had the same error, I managed to fix it by setting UNITY_NOPROXY to localhost in cmd.

To do so, open the Windows command prompt (Win+R and type cmd, or search cmd in the start menu), then type setx UNITY_NOPROXY localhost.

Have the same error and tried “setx UNITY_NOPROXY localhost”.
The cmd was successful but the error persists.
I’m running 2019.1.0f2 and windows just updated so this might be the problem.
All was working fine yesterday and I even tried making a new project but same problem.

It doesn’t work for me

the solution that it works with me, it’s just I update to windows 10, then restart the pc

I am having this same problem - I have to retry launching my project for 20 minutes before it loads. I’m glad this is a hobby because if the apps I need for work did this I would probably lose my mind.

@Czekotolada
the solution that it works :
download:
unity Unity 2019.3.0f6
or
Unity 2019.1.0f2

https://unity3d.com/pt/get-unity/download/archive

Hi, I got the same error, checked 127.0.0.1 on my browser and got an error hence setx UNITY_NOPROXY localhost did not work for me, so I went to my windows defender firewall with advanced security, and turned off the domain ,public and private profiles since I already have Quick Heal on, and my project started working, I suppose there was a conflict between Quick Heal and Windows Defender as both of them were turned on! I hope that helps!,Hi, I got the same error, checked 127.0.0.1 on my browser and got an error hence setx UNITY_NOPROXY localhost did not work for me, so I went to my windows defender firewall with advanced security, and turned off the domain ,public and private profiles since I already have Quick Heal on, and my project started working, I suppose there was a conflict between Quick Heal and Windows Defender as both of them were turned on! I hope that helps!

It worked out for me by doing this: before opening unity, deactivate the windows firewall and antivirus, then I opened the project and everything worked out, hopefully someone will find it useful
,
It worked out for me by doing this: before opening unity, deactivate the windows firewall and antivirus, then I opened the project and everything worked out, hopefully someone will find it useful

Press the Windows button and search
“configure proxy server”.

In the ‘Connections’ tab. Press on LAN
setting.

That will land you to this window
below and set it to the same setting
as you are seeing in the picture
Settings Image 1

Also, do the same in PC Setting if you
are using Windows 8.1 or 10

Go to PC Setting

Click on ‘Network’

Click on ‘Proxy’

Choose the same setting as you are
seeing in the picture below Settings
Image 2


Now

Right-click on ‘My Computer’ icon

Go to properties

Click on ‘Advanced System Settings’

Click on ‘Environment Variable’

Delete any HTTP_PROXY or HTTPS_PROXY
entry from both the panel(User and
System). They both are not important
for the network.

If still Asset store is not working
and asking for checking HTTP_PROXY and
HTTPS_PROXY settings

Go to Windows Firewall in Control
Panel

Click on ‘Allow a Windows app or
feature through Windows Firewall’

Allow Unity’s software in Private and
Public Section(tick on them)

Click ‘OK’

[edited to improve answer ]
for more click Here

A solution that worked for me was going into windows settings–>firewall & network protection–>allow an app through firewall. Click on the button that says “change settings” with the administrator icon next to it. Scroll down and check mark both private and public for every unity build, editor, and hub. Hope this helps :slight_smile: