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Fixed in 2019.3.X

Fixed in 2018.4.X, 2019.2.X



Found in


Issue ID




[Windows][Networking] Unity doesn't acknowledge the proxy exclusion list



Steps to reproduce:
1. Make sure your Windows PC is not on VPN
2. Go to proxy settings and set up everything like it is shown in "proxySettings.png"
3. Verify that proxy is working correctly by going to google chrome and typing following domains:
a) - should work as expected because we added it to exclusion list
b) - should throw an error in chrome "There is something wrong with the proxy server, or the address is incorrect."
If your results are the same as above, then the proxy is set up correctly and you can proceed to step 4
If your results are not the same, read edit section
4. Open attached project ""
5. Open "SampleScene" scene
6. Press Play
- Both requests fail (" Error: Cannot connect to destination host" & " Error: Cannot connect to destination host")

Actual result: Unity doesn't acknowledge the exclusion list set up in Windows 10 proxy settings which results in both requests failing
Expected result: Unity should acknowledge the exclusion list and allow connection without a proxy to (in this specific example)

Reproduced on: 2017.4.28f1, 2018.4.4f1, 2019.3.0a9

  1. Resolution Note (fix version 2019.3):

    The libCurl implementation for Windows was updated to pipe the proxy "Bypass List" from Windows IE configuration into Curl's "NOPROXY" option.

    This functionality never existed for Unity's libCurl implementation, but apparently did exist way back when OpenSSL was being used.

Comments (6)

  1. Famere

    Jun 30, 2022 10:39

    Hello, I am new

  2. anastefanyuk

    Feb 17, 2021 12:49

    Unity is one of the best engines to build software on, but sometimes can be quite difficult to work with. So the best you can do is to find a qualified and reliable DevOps developer, I found appropriate here: - they, have a huge talent pool, so you definitely can find the team of software developers you need by working with them.

  3. choivoi29

    Jun 18, 2020 02:20

    I love it when you call me senorita. I wish you could pretend need me

  4. zp191090

    Jun 11, 2020 12:31

    Quite often I encounter problems in the work of Unity. You have to go to to solve them.

  5. Chloeman

    May 31, 2020 08:26

    Unity has been having these problems on my computer, as well. I am glad the solution to this problem is provided here. Otherwise, I'd be in trouble.

  6. EulaHoppe

    Dec 12, 2019 14:36

    Unity system does not recognize set up of exclusion list of windows 10 as well as it does not allow connection. Reason of failure of both these requests are totally unknown for me due to not having familiarity with codes. I prefer to visit website which provides exciting ideas to protect my identity.

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