After upgrading my Netcode for GameObjects (NGO) project from Unity 6000.3.2f1 to 6000.3.5f1, several packages in the project started showing an “Invalid Signature” warning in the Package Manager. According to Unity’s documentation, this warning indicates that a package may have been modified or co…

Hey folks, We apologize for the inconvenience caused! Our team worked nonstop to find a solution, and we’re more than happy to share that a fix has been successfully deployed and updates for LTS 6.0 and 6.3 are now available! Builds: Unity 6.3 LTS: 6000.3.5f2 Unity 6.0 LTS: 6000.0.66f2 Edit: …

I am still on 6.3.2 and a new 2d project there show warnings on all the 2D packages!! This is another nasty bug! Hope a quick server fix?!

Just started to learn Unity and got this after fresh install. :grin: :grin:

Same here. I just installed it yesterday and I’m getting the same errors.

This is on the LTS version of Unity. Trying to get back into Unity after a couple years of using other engines and this is what I get. On a beta version would be one thing, but this is ridiculous [Screenshot_20260124_145648] Also, this is on CachyOS with version 6000.3.5f1, if anyone cares (clear…

They have probably tried vibecoding to update the LTS version

Oh, good god, please no. :person_facepalming:

Oh lord a fresh bug, where’s my reddit guy 5+ years ago with the solution :frowning:

Package manager invalid signatures issue

Unity Engine

mattsich January 24, 2026, 7:31pm 53

seeing this as well with com.unity.cloud.ktx

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Package manager invalid signatures issue

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