Can't open Unity 2017.2.0p2-MRTP5: Failed to start Unity Package manager (works on release Unity2017.1.2)

I need to install Unity 2017.2.0p2-MRTP5 so I can use it with the most recent version of the Mixed reality toolkit, however when I try and open a project with it, it hangs on Unity Package Manager starting server, then I get this error:

Failed to start Unity Package Manager: operation timed out. Please see the Editor.log file for more information.

I also am unable to login to unity through the beta launcher, I get a service not available error.

Below is the editor.log after trying to log in, then trying to open a project:


All of the above works fine in Unity 2017.1.2f1

Hope someone can help, thanks in advance!

Hi @mcgeeit ,

(Sorry for the late answer)

This bug was fixed in patch 4 (2017.2.0p4). Can you try to download the latest 2017.2 patch release ( and see if it works. If it does work, please request for the custom MRTP5 version to include changes from the patch release.



Thanks for the response @okcompute_unity ,

I eventually solved this by updating my antivirus software (Kaspersky), I had issues with all versions of Unity from 2017.2 onward, but it’s sorted now!