MacOS server cannot find libMonoPosixHelper.dylib when calling GZipStream

Unity: Mono

Open

6.6.X

6.5.X

6.3.X

6.0.X

In Progress

6.7.X

6000.7.0a3

Won't Fix

6.4.X

Unity 6000.4 has reached its end of life and will not receive further updates. If you need additional fixes, please upgrade to a newer Unity version.

Steps to Reproduce:

Open the attached “IN-141389“ project
Run the Menu Item “Build > Mac Server”
Find the Server in “/Builds/Server/TestServer/3275586” and Run it by simply opening it
Observe the Terminal

Actual result: a “DllNotFoundException: libMonoPosixHelper.dylib assembly:<unknown assembly> type:<unknown type> member:(null)” exception is thrown
Expected result: No DllNotFoundException exception, server starts up

Reproducible with: 6000.0.0b11, 6000.0.74f1, 6000.3.15f1, 6000.4.6f1, 6000.5.0b5, 6000.6.0a4

Reproducible on: macOS 26.4.1

MacOS server cannot find libMonoPosixHelper.dylib when calling GZipStream

Unity: Mono

Open

In Progress

Won't Fix

Prioritise and Follow this issue

Have a workaround or additional info about this issue?

MacOS server cannot find libMonoPosixHelper.dylib when calling GZipStream

Unity: Mono

Statuses

Open

In Progress

Won't Fix

Resolution Notes

6.4.XWon't FixUnity 6000.4 has reached its end of life and will not receive further updates. If you need additional fixes, please upgrade to a newer Unity version.

Description

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Have a workaround or additional info about this issue?