Failed to start Unity Package Manager: operation timed out.

Hi,

We have found one 100% repro step for this issue. An empty hosts file is the cause. We have a fix in the way. But in the meantime, can you check the content of your hosts file. It should be located here:

On Windows:

C:\Windows\System32\drivers\etc\hosts

On macOS:

/etc/hosts

Make sure the localhost host name is defined like this

127.0.0.1 localhost

Another solution other users have reported to work is to set the UNITY_NOPROXY environment variable to localhost:

On Windows command prompt,

setx UNITY_NOPROXY localhost,127.0.0.1

On Mac > terminal,

export UNITY_NOPROXY=localhost,127.0.0.1

If this fix does not work or if your hosts file is already correct, we also found out that anti-virus softwares can prevent the Unity Package Manager process to start. In that scenario, you can disable your anti-virus software for a few minutes to test if it works. If it did, configure your anti-virus to whitelist the NodeJS bundled with Unity (Under Unity installation folder, /Tools/nodejs/node.exe on Windows of /Tools/nodejs/bin/node on other platforms).

Let me know if it resolve the issue!

Pascal