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Fixed in 2021.1.X

Fixed in 2019.4.X, 2020.2.X



Found in




Issue ID




Freeze or crash with various stack traces when opening a project while connected to a VPN service

Shader System


How to reproduce:
1. Connect to a VPN service
2. Create or open a Unity project

Reproducible with: 2018.4.30f1, 2019.4.16f1, 2020.1.16f1, 2020.2.0b13, 2021.1.0a5
Not reproducible with: 2020.2.0b14, 2021.1.0a6

Workaround for NordVPN:
Use OpenVPN or IKEv2/IPSec to connect to NordVPN servers. Tutorials on how to do that, can be found here:

  1. Resolution Note (fix version 2021.1):

    NordVPN (and some other VPN services) seems to mess up with our network sockets based shader compiler IPC. We're moving to other IPC methods to avoid such issues.
    Fixed in 2021.1.0a6

  2. Resolution Note (fix version 2020.2):

    Fixed in version 2020.2.2f1

  3. Resolution Note (fix version 2019.4):

    Fixed in version 2019.4.20f1

Comments (35)

  1. calvinsteel

    Mar 26, 2019 07:24

    The issue is still unfixed.

  2. zionperez

    Mar 20, 2019 00:02

    This still happens in Unity 2018.3.9f1

  3. RoobrArcade

    Feb 13, 2019 19:15

    I've been having the same problem. A fix would be nice.

  4. Classic-Niall

    Feb 06, 2019 20:55

    This is still an issue

  5. ow1

    Jan 18, 2019 07:21

    sad, this problem is still not fixed.

  6. ow1

    Jan 18, 2019 07:21

    sad, this problem is still not fixed.

  7. Totalschaden

    Jan 14, 2019 07:24

    Have the same Problem, this needs fixing.

  8. Disastercake

    Dec 09, 2018 16:06

    This issue is a testament to Unity's stalwart conviction to persistently surprise its users with inane bugs.

  9. GelsamelXV

    Oct 13, 2018 10:24

    This is absolutely unacceptable and indicative of incredible bad faith on Unity's side, especially for a free license.

  10. MarekDyjor

    Oct 01, 2018 20:02

    is realy weird problem. I don't understand way it is not solved for such a long time. All this combination with openvpn are ridiculous and very uncomfortable.

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