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I cannot open Unity and I am stuck with a message saying "Could not establish a connection with Unity Package Manager”, what can I do?

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4 comments

  • Don Goddard

    This doesn't work on Monterey 12.1 Unity 2021.2.28 on M1 Max (even with setting environment variables). Tons of "Failed to get ipc connection from UnityShaderCompiler"

    WARNING: Shader Unsupported: 'MK/Glow/UI/Unlit/Text Detail' - All subshaders removed
    WARNING: Shader Did you use #pragma only_renderers and omit this platform?
    WARNING: Shader If subshaders removal was intentional, you may have forgotten turning Fallback off?
    Shader 'Effects/Distortion/CullOff': fallback shader 'Effects/Distortion/Free/CullOff' not found
    Shader 'MK/Glow/UI/Lit/Detail': fallback shader 'MK/Glow/UI/Lit/Transparent' not found
    Shader 'Effects/Mobile/Distortion/CullOff': fallback shader 'Effects/Distortion/Free/CullOff' not found
    Shader 'Unlit HDRP SHADOWS SM': fallback shader 'Hidden/Shader Graph/FallbackError' not found
    Shader 'TMPro/Distance Field 3': fallback shader 'TMPro/Mobile/Distance Field' not found
    Shader 'MoreMountains/MMRipple': fallback shader 'Particle/AlphaBlended' not found
    Launching external process: /Applications/Unity/Hub/Editor/2021.2.8f1/Unity.app/Contents/Tools/UnityShaderCompiler
    No explicit failure code handling for error of type 22
    Failed to get ipc connection from UnityShaderCompiler shader compiler! /Applications/Unity/Hub/Editor/2021.2.8f1/Unity.app/Contents/Tools/UnityShaderCompiler
    Launching external process: /Applications/Unity/Hub/Editor/2021.2.8f1/Unity.app/Contents/Tools/UnityShaderCompiler
    No explicit failure code handling for error of type 22
    Failed to get ipc connection from UnityShaderCompiler shader compiler! /Applications/Unity/Hub/Editor/2021.2.8f1/Unity.app/Contents/Tools/UnityShaderCompiler
    Launching external process: /Applications/Unity/Hub/Editor/2021.2.8f1/Unity.app/Contents/Tools/UnityShaderCompiler
    No explicit failure code handling for error of type 22
    Failed to get ipc connection from UnityShaderCompiler shader compiler! /Applications/Unity/Hub/Editor/2021.2.8f1/Unity.app/Contents/Tools/UnityShaderCompiler
    Launching external process: /Applications/Unity/Hub/Editor/2021.2.8f1/Unity.app/Contents/Tools/UnityShaderCompiler
    No explicit failure code handling for error of type 22
    Failed to get ipc connection from UnityShaderCompiler shader compiler! /Applications/Unity/Hub/Editor/2021.2.8f1/Unity.app/Contents/Tools/UnityShaderCompiler
    Launching external process: /Applications/Unity/Hub/Editor/2021.2.8f1/Unity.app/Contents/Tools/UnityShaderCompiler
    No explicit failure code handling for error of type 22
    F

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  • Dylan Hunt

    After diagnosing checks all boxes without errors, I can confirm that my case is due to an [accidental?] IP block since a VPN fixes it. Using a VPN resolves it for me. It may not be you. I tried contacting Unity to resolve this - we'll see what happens.

    0
  • Ingrid

    Hi Dylan,

    Thanks for reaching out.

    I am glad to see that your problem has been resolved on Ticket# 1175212. If you have any further questions, please contact us.

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  • Dylan Hunt

    Ingrid I did not resolve it. This is an inefficient workaround with breaking side-effects. I can only get this working when I VPN outside of Taiwan (a region without censorship, meaning that all signs point to Unity servers doing the blocking). 

    This seems to be a Unity-server-side geo-blocking issue, since:

    1. No proxy

    2. Firewall disabled

    3. Diagnostic tool 100% passes

    4. USA VPN is a confirmed workaround.

    5. Reproduced on a fresh install of Windows 11 (with the latest version of Hub).

    This can be further backed by the licensing bug(?) that only allows Taiwan IP addresses to hold a license for a few days at a time (before forcing a reapply), worked around with a VPN outside of TW.

    This can further be confirmed via this thread: https://forum.unity.com/threads/do-i-need-to-renew-my-license-every-week.747794/

    Are any other users here operating out of Taiwan?

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