Immutable asset(s) were unexpectedly altered

I got the following warning when updating our project from 2020.1.0b13 to 2020.1.0b14
Is this normal?
Should I be concerned?

The package cache was invalidated and rebuilt because the following immutable asset(s) were unexpectedly altered:
Packages/com.unity.2d.sprite
Packages/com.unity.2d.sprite/CHANGELOG.md
Packages/com.unity.2d.sprite/Editor
Packages/com.unity.2d.sprite/Editor/AssemblyInfo.cs
Packages/com.unity.2d.sprite/Editor/Interface
Packages/com.unity.2d.sprite/Editor/Interface/IAssetDatabase.cs
Packages/com.unity.2d.sprite/Editor/Interface/IEvent.cs
Packages/com.unity.2d.sprite/Editor/Interface/IGL.cs
Packages/com.unity.2d.sprite/Editor/Interface/IGUIUtility.cs
Packages/com.unity.2d.sprite/Editor/Interface/IHandles.cs
Packages/com.unity.2d.sprite/Editor/Interface/ISpriteEditorDataProvider.cs
Packages/com.unity.2d.sprite/Editor/Interface/ITexture.cs
Packages/com.unity.2d.sprite/Editor/Interface/IUndoSystem.cs
Packages/com.unity.2d.sprite/Editor/ShapeEditor
Packages/com.unity.2d.sprite/Editor/ShapeEditor/ShapeEditor.cs
Packages/com.unity.2d.sprite/Editor/ShapeEditor/ShapeEditorRectSelection.cs
Packages/com.unity.2d.sprite/Editor/SpriteEditor
Packages/com.unity.2d.sprite/Editor/SpriteEditor/SpriteEditorHandles.cs
Packages/com.unity.2d.sprite/Editor/SpriteEditor/SpriteEditorMenu.cs
Packages/com.unity.2d.sprite/Editor/SpriteEditor/SpriteEditorUtility.cs
Packages/com.unity.2d.sprite/Editor/SpriteEditor/SpriteEditorWindow.cs
Packages/com.unity.2d.sprite/Editor/SpriteEditor/SpriteRect.cs
Packages/com.unity.2d.sprite/Editor/SpriteEditor/SpriteUtilityWindow.cs
Packages/com.unity.2d.sprite/Editor/SpriteEditorModule
Packages/com.unity.2d.sprite/Editor/SpriteEditorModule/ISpriteEditorModule.cs
Packages/com.unity.2d.sprite/Editor/SpriteEditorModule/SpriteEditorData.cs
Packages/com.unity.2d.sprite/Editor/SpriteEditorModule/SpriteFrameModule
Packages/com.unity.2d.sprite/Editor/SpriteEditorModule/SpriteFrameModule/SpriteFrameModule.cs
Packages/com.unity.2d.sprite/Editor/SpriteEditorModule/SpriteFrameModule/SpriteFrameModuleBase.cs
Packages/com.unity.2d.sprite/Editor/SpriteEditorModule/SpriteFrameModule/SpriteFrameModuleBaseView.cs
Packages/com.unity.2d.sprite/Editor/SpriteEditorModule/SpriteFrameModule/SpriteFrameModuleView.cs
Packages/com.unity.2d.sprite/Editor/SpriteEditorModule/SpriteFrameModule/SpritePolygonModeModule.cs
Packages/com.unity.2d.sprite/Editor/SpriteEditorModule/SpriteFrameModule/SpritePolygonModeModuleView.cs
Packages/com.unity.2d.sprite/Editor/SpriteEditorModule/SpriteOutlineModule.cs
Packages/com.unity.2d.sprite/Editor/SpriteEditorModule/SpritePhysicsShapeModule.cs
Packages/com.unity.2d.sprite/Editor/SpriteEditorModule/SpriteSecondaryTexturesModule.cs
Packages/com.unity.2d.sprite/Editor/SpriteEditorModule/TextureImporterDataProvider.cs
Packages/com.unity.2d.sprite/Editor/SpriteEditorModule/TextureImporterDataProviderImplementation.cs
Packages/com.unity.2d.sprite/Editor/UI
Packages/com.unity.2d.sprite/Editor/UI/SpriteEditor
Packages/com.unity.2d.sprite/Editor/UI/SpriteEditor/PolygonChangeShapeWindow.uxml
Packages/com.unity.2d.sprite/Editor/UI/SpriteEditor/SpriteEditor.uss
Packages/com.unity.2d.sprite/Editor/UI/SpriteEditor/SpriteFrameModuleInspector.uxml
Packages/com.unity.2d.sprite/Editor/Unity.2D.Sprite.Editor.asmdef
Packages/com.unity.2d.sprite/LICENSE.md
Packages/com.unity.2d.sprite/README.md
Packages/com.unity.2d.sprite/Tests
Packages/com.unity.2d.sprite/Tests/Editor
Packages/com.unity.2d.sprite/Tests/Editor/SpritePackageTests.cs
Packages/com.unity.2d.sprite/Tests/Editor/Unity.2D.Sprite.Package.EditorTests.asmdef
Packages/com.unity.2d.sprite/package.json
Packages/com.unity.2d.tilemap
Packages/com.unity.2d.tilemap/CHANGELOG.md
Packages/com.unity.2d.tilemap/Editor
Packages/com.unity.2d.tilemap/Editor/AssemblyInfo.cs
Packages/com.unity.2d.tilemap/Editor/CreateTileFromPaletteAttribute.cs
Packages/com.unity.2d.tilemap/Editor/EditorTools
Packages/com.unity.2d.tilemap/Editor/EditorTools/BoxTool.cs
Packages/com.unity.2d.tilemap/Editor/EditorTools/EraseTool.cs
Packages/com.unity.2d.tilemap/Editor/EditorTools/FillTool.cs
Packages/com.unity.2d.tilemap/Editor/EditorTools/MoveTool.cs
Packages/com.unity.2d.tilemap/Editor/EditorTools/PaintTool.cs
Packages/com.unity.2d.tilemap/Editor/EditorTools/PickingTool.cs
Packages/com.unity.2d.tilemap/Editor/EditorTools/SelectTool.cs
Packages/com.unity.2d.tilemap/Editor/EditorTools/TilemapEditorTool.cs
Packages/com.unity.2d.tilemap/Editor/GridBrush.cs
Packages/com.unity.2d.tilemap/Editor/GridBrushEditor.cs
Packages/com.unity.2d.tilemap/Editor/GridBrushEditorBase.cs
Packages/com.unity.2d.tilemap/Editor/GridBrushesDropdown.cs
Packages/com.unity.2d.tilemap/Editor/GridEditorUtility.cs
Packages/com.unity.2d.tilemap/Editor/GridPaintPaletteClipboard.cs
Packages/com.unity.2d.tilemap/Editor/GridPaintPaletteWindow.cs
Packages/com.unity.2d.tilemap/Editor/GridPaintPaletteWindowPreferences.cs
Packages/com.unity.2d.tilemap/Editor/GridPaintSortingAttribute.cs
Packages/com.unity.2d.tilemap/Editor/GridPaintTargetsDropdown.cs
Packages/com.unity.2d.tilemap/Editor/GridPaintingState.cs
Packages/com.unity.2d.tilemap/Editor/GridPaletteAddPopup.cs
Packages/com.unity.2d.tilemap/Editor/GridPaletteBrushes.cs
Packages/com.unity.2d.tilemap/Editor/GridPaletteUtility.cs
Packages/com.unity.2d.tilemap/Editor/GridPalettes.cs
Packages/com.unity.2d.tilemap/Editor/GridPalettesDropdown.cs
Packages/com.unity.2d.tilemap/Editor/GridSelection.cs
Packages/com.unity.2d.tilemap/Editor/GridSelectionEditor.cs
Packages/com.unity.2d.tilemap/Editor/PaintableGrid.cs
Packages/com.unity.2d.tilemap/Editor/PaintableSceneViewGrid.cs
Packages/com.unity.2d.tilemap/Editor/SceneViewGridManager.cs
Packages/com.unity.2d.tilemap/Editor/TileDragAndDrop.cs
Packages/com.unity.2d.tilemap/Editor/TileDragAndDropManager.cs
Packages/com.unity.2d.tilemap/Editor/TileUtility.cs
Packages/com.unity.2d.tilemap/Editor/Unity.2D.Tilemap.Editor.asmdef
Packages/com.unity.2d.tilemap/LICENSE.md
Packages/com.unity.2d.tilemap/README.md
Packages/com.unity.2d.tilemap/Tests
Packages/com.unity.2d.tilemap/Tests/Editor
Packages/com.unity.2d.tilemap/Tests/Editor/TilemapPackageTests.cs
Packages/com.unity.2d.tilemap/Tests/Editor/Unity.2D.Tilemap.Package.EditorTests.asmdef
Packages/com.unity.2d.tilemap/package.json
Packages/com.unity.burst
Packages/com.unity.burst/CHANGELOG.md
Packages/com.unity.burst/Editor
Packages/com.unity.burst/Editor/BurstAotCompiler.cs
Packages/com.unity.burst/Editor/BurstAotSettings.cs
Packages/com.unity.burst/Editor/BurstCompileTarget.cs
Packages/com.unity.burst/Editor/BurstDisassembler.Core.ARM64.cs
Packages/com.unity.burst/Editor/BurstDisassembler.Core.cs
Packages/com.unity.burst/Editor/BurstDisassembler.Core.x86.cs
Packages/com.unity.burst/Editor/BurstDisassembler.cs
Packages/com.unity.burst/Editor/BurstEditorOptions.cs
Packages/com.unity.burst/Editor/BurstInspectorGUI.cs
Packages/com.unity.burst/Editor/BurstLoader.cs
Packages/com.unity.burst/Editor/BurstMenu.cs
Packages/com.unity.burst/Editor/BurstReflection.cs
Packages/com.unity.burst/Editor/LongTextArea.cs
Packages/com.unity.burst/Editor/Unity.Burst.Editor.asmdef
Packages/com.unity.burst/LICENSE.md
Packages/com.unity.burst/Runtime
Packages/com.unity.burst/Runtime/BurstAliasing.cs
Packages/com.unity.burst/Runtime/BurstCompileAttribute.cs
Packages/com.unity.burst/Runtime/BurstCompiler.cs
Packages/com.unity.burst/Runtime/BurstCompilerOptions.cs
Packages/com.unity.burst/Runtime/BurstExecutionEnvironment.cs
Packages/com.unity.burst/Runtime/BurstRuntime.cs
Packages/com.unity.burst/Runtime/DebugView.cs
Packages/com.unity.burst/Runtime/DiagnosticId.cs
Packages/com.unity.burst/Runtime/FunctionPointer.cs
Packages/com.unity.burst/Runtime/Intrinsics.cs
Packages/com.unity.burst/Runtime/SharedStatic.cs
Packages/com.unity.burst/Runtime/Unity.Burst.asmdef
Packages/com.unity.burst/Runtime/x86
Packages/com.unity.burst/Runtime/x86/Common.cs
Packages/com.unity.burst/Runtime/x86/Csr.cs
Packages/com.unity.burst/Runtime/x86/Sse.cs
Packages/com.unity.burst/Runtime/x86/Sse2.cs
Packages/com.unity.burst/Runtime/x86/Sse3.cs
Packages/com.unity.burst/Runtime/x86/Sse4_1.cs
Packages/com.unity.burst/Runtime/x86/Ssse3.cs
Packages/com.unity.burst/Tests
Packages/com.unity.burst/Tests/Editor
Packages/com.unity.burst/Tests/Editor/EditmodeTest.cs
Packages/com.unity.burst/Tests/Editor/Unity.Burst.Editor.Tests.asmdef
Packages/com.unity.burst/Tests/Runtime
Packages/com.unity.burst/Tests/Runtime/BurstJobTester.cs
Packages/com.unity.burst/Tests/Runtime/FunctionPointerTests.cs
Packages/com.unity.burst/Tests/Runtime/ManagedExceptionsBurstJobs.cs
Packages/com.unity.burst/Tests/Runtime/NativeTriggeredManagedExceptionsBurstJobs.cs
Packages/com.unity.burst/Tests/Runtime/PlaymodeTest.cs
Packages/com.unity.burst/Tests/Runtime/Shared
Packages/com.unity.burst/Tests/Runtime/Shared/010-NotSupported.cs
Packages/com.unity.burst/Tests/Runtime/Shared/020-Types.cs
Packages/com.unity.burst/Tests/Runtime/Shared/030-Expressions.cs
Packages/com.unity.burst/Tests/Runtime/Shared/031-Pointers.cs
Packages/com.unity.burst/Tests/Runtime/Shared/035-Functions.cs
Packages/com.unity.burst/Tests/Runtime/Shared/040-ControlFlows.cs
Packages/com.unity.burst/Tests/Runtime/Shared/050-TestStructs.cs
Packages/com.unity.burst/Tests/Runtime/Shared/053-TestConstArrays.cs
Packages/com.unity.burst/Tests/Runtime/Shared/060-TestEnums.cs
Packages/com.unity.burst/Tests/Runtime/Shared/070-TestAtomics.cs
Packages/com.unity.burst/Tests/Runtime/Shared/080-TestSystemMath.cs
Packages/com.unity.burst/Tests/Runtime/Shared/081-UnityMath.cs
Packages/com.unity.burst/Tests/Runtime/Shared/082-PartialManaged.cs
Packages/com.unity.burst/Tests/Runtime/Shared/090-Vectors-BinaryOperators-Float2.cs
Packages/com.unity.burst/Tests/Runtime/Shared/090-Vectors-BinaryOperators-Float3.cs
Packages/com.unity.burst/Tests/Runtime/Shared/090-Vectors-BinaryOperators-Float4.cs
Packages/com.unity.burst/Tests/Runtime/Shared/090-Vectors-BinaryOperators-Int4.cs
Packages/com.unity.burst/Tests/Runtime/Shared/090-Vectors-Bools.cs
Packages/com.un
(Filename: C:\buildslave\unity\build\Modules/PackageManager/Editor/PackageManagerImmutableAssets.cpp Line: 111)

 

Hey there,

Thanks for letting us know! We've reported the issue to the team. There is nothing to be concerned about, this sometimes happens when updating a project to a new editor version though but we appreciate why this can be concerning.

 

This same issue happened to me today. It happened after I renamed a C# script in my Assets panel. I cannot run the game now.

 

Same here after upgrading to Unity 2020.1.2f today. Can't run the game.

 

Hey there!

We have a ticket opened internally on the issue, the team will be taking a look!

 

Any fixes? I am using 2019.4 and I cannot fix the following errors, which seem similar to those posted here:

2019.4.7f1\Editor\Data\Resources\PackageManager\BuiltInPackages\com.unity.2d.sprite\Editor\SpriteEditorModule\TextureImporterDataProvider.cs(77,14): error CS0246: The type or namespace name 'SpriteDataExt' could not be found (are you missing a using directive or an assembly reference?)

ibrary\PackageCache\com.unity.render-pipelines.core@7.5.1\Runtime\RenderGraph\RenderGraph.cs(310,16): error CS0246: The type or namespace name 'RenderGraphBuilder' could not be found (are you missing a using directive or an assembly reference?)

 

Having the same error poping up since I've switched from Rider to VSCode, can vscode somehow alter files while indexing or something like that?

 

Same problem with Kinematica 2020.2.0f1 resources. I imported Kinematica into HDRP and updated the materials. I have no access to the materials now to change them, sop i replaced them which works until it refreshs. I mean, basically it behaves like a read only file so i am going to check permissions while you all get this straightened out. I can tell you it is not limited to Kinematica, but no need listing everything as you can see what is happening.

 

Is the problem solved? I am using 2020.2 and I install Terrain but the is a issue that is "missing material" of terrain.

 

Me too, it is because of the terrain asset pack. my version is also 2020
Have you got the solution for this? by any chance

 

I'm having a similar problem as described here: https://forum.unity.com/threads/uni...error-cs1525-invalid-expression-term.1204294/

 

New
The package cache was invalidated and rebuilt because the following immutable asset(s) were unexpectedly altered:
Packages/com.unity.textmeshpro/Scripts/Runtime/Unity.TextMeshPro.asmdef

 

I'm attempting to modify the

Code (CSharp):

1.  public class CinemachineInputProvider : MonoBehaviour, AxisState.IInputAxisProvider

class with this thread
https://forum.unity.com/threads/cin...sable-enable-following-mouse-movement.960491/

it wants me to add

Code (CSharp):

1.         if (!Input.GetMouseButton(1))
2.             return 0;

to this

Code (CSharp):

1. public virtual float GetAxisValue(int axis)
2.         {
3.             var action = ResolveForPlayer(axis, axis == 2 ? ZAxis : XYAxis);
4.             if (action != null)
5.             {
6.                 switch (axis)
7.                 {
8.                     case 0: return action.ReadValue<Vector2>().x;
9.                     case 1: return action.ReadValue<Vector2>().y;
10.                     case 2: return action.ReadValue<float>();
11.                 }
12.             }
13.             return 0;
14.         }

but simply adding these two lines of code cause this error.

and the fun thing is the script automatically reverts.
looks like some kind of permissions thing.

 

Did you found a solution?

 

Im having the same problem

 

how to deal with this?

 

I have it in 2021.3.25f1 (LTS):

The package cache was invalidated and rebuilt because the following immutable asset(s) were unexpectedly altered:
Packages/com.unity.render-pipelines.high-definition/Runtime/RenderPipelineResources/HDRenderPipelineRuntimeResources.asset

UnityEditor.EditorApplication:Internal_CallGlobalEventHandler ()

 

Yep, same issue here with the HDRP Sample project on 2022.3.0f1 LTS.

 

Same issue on 2022.3.0f1 LTS, really annoying, triggers constant package re-importing making the editor very slow due to rebuilding package cache anytime I touch any HDRP, terrain or vfx assets

 

Same on 2022.3.1f1.

 

Same issue on multiple package.

 

Unity 2022.2.21f1 and 2022.3.1f1 keep having issues with HDRP.

Code (CSharp):

1. The package cache was invalidated and rebuilt because the following immutable asset(s) were unexpectedly altered:
2. Packages/com.unity.render-pipelines.high-definition/Runtime/RenderPipelineResources/HDRenderPipelineRuntimeResources.asset

Unity 2022.2.10f1 seems to be fine.
Creating a Core 3D project and then adding HDRP manually also produces the same issue.

 

Same here!

 

I am having the same issue in 2022.3.0f1

 

Its pretty annoying. Did anyone submit a bug on this yet so that Unity sees the issue? I have not. We're buried in one of the thousands of threads and millions of users here, they wont see it without bug submit

 

Same here. Any update? This was going from latest lts to tech stream, and now I constantly get it even after full reimport.

'The package cache was invalidated and rebuilt because the following immutable asset(s) were unexpectedly altered:
Packages/com.unity.render-pipelines.universal/Runtime/Materials/Sprite-Lit-Default.mat'

 

Yeah this is probably being overlooked because the thread is on the 2022.1 beta.

 

I am having the same issue in 2021.3.29f1.

I find a workable solution: find your Editor.log and search for "immutable" to find logs like this:

"The package cache was invalidated and rebuilt because the following immutable asset(s) were unexpectedly altered:
Packages/com. Unity. Testtools. Codecoverage/Editor/Icons/codecoverage. PNG "

The packages listed here is the cause of PackageManager infinite resolving. Just remove these Packages from the PackageManager (or find package name in mainfest.json, since some of packages do not show in package manager), than all seems to be fine. I'm not sure why, but it does work for me.