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Source of the problem

When unity is started, fail to start unity package manager is displayed, and the software environment is unity 2017.3.0f3

Solutions

According to the scheme given on the Internet, I choose the method of adding environment variables

Add it directly from the command line under CMD (please open it in administrator mode). The command is as follows: setx unity_ NOPROXY localhost,127.0.0.1

In addition, there are Modify hosts methods

Find the file C: windows, system32, drivers, etc, and save the comment before 127.0.0.1 localhost

Refer to some related links of the solution

Official solution: https://answers.unity.com/questions/1423264/unity-20172-not-workingunity-package-manager-error.html

Others: http://tieba.baidu.com/p/5402602229?red_ tag=j1291795153

Close windows defender and firewall, reset network settings. reference resources https://iihelp.iinet.net.au/Resetting_ Network_ Adapter_% 28Winsock_ Reset%29

The source of the problem

When starting Unity, it displays fail to start Unity Package Manager , and the software environment is Unity 2017.3.0f3.

solution

According to the scheme given on the Internet, I choose the method of adding environment variables

Use the command line to add directly under cmd (note that it is opened in administrator mode), the command is as follows: setx UNITY_NOPROXY localhost,127.0.0.1

In addition, there are methods to modify hosts

Find the C:\Windows\System32\drivers\etc\hosts file, remove the comment symbol before “127.0.0.1 localhost” and save it.