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Question by koraken · Jul 26, 2020 at 10:24 PM · editorprojectpackageswindows 10startup

Unity Package Manager Failed to resolve packages: "zlib: incorrect data check"

This error occurs after a fresh install of the Unity 2019.4.4f1 editor on my Windows 10 system. It occurs both when trying to create a new project and when opening an existing project. I can continue to open the project, but it opens with no packages. Any attempt to open the package manager results in an empty package list, and this error repeated into the console.

 Failed to resolve packages: Failed to add editor bundled package [C:\Program Files\Unity\Hub\Editor\2019.4.4f1\Editor\Data\Resources\PackageManager\Editor\com.unity.postprocessing-2.3.0.tgz] to the package cache:
 
 zlib: incorrect data check. No packages loaded.

The package referenced in the error does exist at that path. I can open it and browse the package contents successfully with another compressed file tool.

The only out of the ordinary factor was that I installed Unity Hub and the editor over a Windows Remote Desktop session. The same error occurs whether I physically at the machine or I am using a Remote Desktop session.

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