Resource Blocked when Installing Post Processing Package?

I'm using the Universal Render Pipeline in my current project.
Whenever I try to install the Post Processing Package through Package Manager, It gives me an error saying,

'EBUSY: resource busy or locked, open "ProjectPath/Library/PackageCache/.tmp......./copy\postprocessing\Textures\LensDirt\LensDirt00.png"

There isn't any other application which is using the file at that moment.
Also, I tried going to the path in explorer, and there isn't any folder named ".tmp.......", even with Hidden Files shown.
I'm having this issue since I upgraded to the 2019 version of Unity.

 

I re-installed Unity and It works now. I can import the Post Processing Package.
Well, I got a total of 4 error messages.
Sorry, I don't have any way of reproducing them now.
Thanks for the reply though.

 

Hi,
i'm having lots of these errors and i cannot upgrade any package.
the LWRP is particularly critical for me, i have these errors:

Code (csharp):

1.  
2. Cannot perform upm operation: EBUSY: resource busy or locked, open 'C:\Dev\SpaceFox\Library\PackageCache\.tmp21748DGxqJlpR8RFG\copy\InputSystem\NativeInputRuntime.cs' [NotFound]
3. UnityEditor.EditorApplication:Internal_CallUpdateFunctions()
4.  

and

Code (csharp):

1.  
2. Cannot perform upm operation: Unable to add package [com.unity.render-pipelines.lightweight@7.2.1]:
3.   One or more dependencies could not be added to the local file system:
4.     com.unity.postprocessing: EBUSY: resource busy or locked, open 'C:\Dev\SpaceFox\Library\PackageCache\.tmp21748JZxhnF49luE5\copy\PostProcessing\Editor\Tools\DefineSetter.cs'
5.     com.unity.render-pipelines.core: EBUSY: resource busy or locked, open 'C:\Dev\SpaceFox\Library\PackageCache\.tmp2174897SqhwAdEqfo\copy\Editor\InspectorCurveEditor.cs'
6.     com.unity.render-pipelines.universal: EBUSY: resource busy or locked, open 'C:\Dev\SpaceFox\Library\PackageCache\.tmp21748IFm6d1FtW0vF\copy\Runtime\ScriptableRendererData.cs'
7.     com.unity.shadergraph: EBUSY: resource busy or locked, open 'C:\Dev\SpaceFox\Library\PackageCache\.tmp21748rvJVGN96lQ2t\copy\Editor\Data\Graphs\GraphData.cs' [NotFound]
8. UnityEditor.EditorApplication:Internal_CallUpdateFunctions()
9.  

 

The solution for me if anyone stumbles upon this later was to make sure my IDE was closed as it had a lock on all files in Unity folder somehow

 

Thanks, that worked for me

 

I had the same error for many times before, though I still had no idea why this occur, my solution is to disable the anti-virus monitor temporarily while installing package

 

Got the same error, the workaround worked fine.

Closing down the IDE is enough.

 

Yes, that works for me, thanks!

 

Yup, closed down VS Code and suddenly everyone is playing ball again

 

Turn off Windows Defender (Real-time protection) is working for me.

 

I'm getting this error when trying to install various packages. I've turned off Windows Defender, reinstalled Unity, closed the IDE -- nothing works. Here are the error messages to the console. Any suggestions?

Cannot perform upm operation: Unable to add package [com.unity.progrids@3.0.3-preview.6]:
One or more dependencies could not be added to the local file system:
com.unity.settings-manager: EBUSY: resource busy or locked, rename 'C:\Users\nazarre\Dropbox\_Game\repos\NetworkTutorial\Library\PackageCache\.tmp2392Vbx2YFUnFtSK\copy' -> 'C:\Users\nazarre\Dropbox\_Game\repos\NetworkTutorial\Library\PackageCache\com.unity.settings-manager@1.0.2' [NotFound].See console for more details
UnityEditor.EditorApplication:Internal_CallUpdateFunctions()

Error adding package: com.unity.progrids@3.0.3-preview.6.
UnityEditor.EditorApplication:Internal_CallUpdateFunctions()

 

I've solved the issue -- dropbox was syncing and would lock the folder. I paused dropbox syncing, loaded required assets, unpaused dropbox and everything is working fine.

 

i have the same error

and i read all of reply and i found to close the IDE is enough @unayozan

so what is closing down IDE and how can i do this to prevent this error to appear when i install a package
and i installed cinemachine and that error came one time but not on second try
but when i tryed to install probuilder the error came but every time i try it appears again and again what should i do

plzz reply as soon as you can

 

IDE = Visual Studio (Community or Code), Rider, MonoDevelop etc. Whatever you edit your code files with.

 

Had this same error, but when installing the Input System. Closing my IDE, Visual Studio Code, fix it as well.

 

When upgrading from 2020.3.2 -> 2021.1.3 I got this issue, solved by closing VSCode.

Code (Boo):

1. [Package Manager] Done resolving packages in 10.98s seconds
2. An error occurred while resolving packages:
3.   One or more packages could not be added to the local file system:
4.     com.unity.render-pipelines.core: EBUSY: resource busy or locked, open 'C:\Users\ThompZon\Unity\XXX\Library\PackageCache\.tmp18312Tdg0pp7Ap3OC\copy\Runtime\Common\IVirtualTexturingEnabledRenderPipeline.cs'
5.     com.unity.render-pipelines.universal: EBUSY: resource busy or locked, open 'C:\Users\ThompZon\Unity\XXX\Library\PackageCache\.tmp18312P168CFt6sc18\copy\Runtime\ScriptableRenderer.cs'
6.     com.unity.shadergraph: EBUSY: resource busy or locked, open 'C:\Users\ThompZon\Unity\XXX\Library\PackageCache\.tmp18312v0suePVu4A5J\copy\Editor\Generation\Controls.cs'
7.  
8. A re-import of the project may be required to fix the issue or a manual modification of C:/Users/ThompZon/Unity/XXX/Packages/manifest.json file.
9.  
10. Exiting without the bug reporter. Application will terminate with return code 1

 

It worked for me thanks

 

Thank you very much,
this fixed the problem for me

 

Using some of the experimental features when installing git caused the issue for me

 

Thank you! It fixed my problem with adding packages from git repositories (via Package Manager window and manifest.json). Problematic option in Git for Windows installer was experimental built-in file system watcher https://github.com/git-for-windows/git/discussions/3251

 

I had the same issue, 2021 now, and reinstalling unity and turning off the windows defender helped. I also instaled the urp before installing Post processing.

 

Correct Answer

 

close your code editor and redo it

 

Thank you for this!

 

YES

 

Closing VS Code worked for me

 

Worked for me in 2022

 

In my case, this issue came after moving my project using Git to a new laptop. I was using this .gitignore. Git never took part on the issue. (Just in case someone suspected on git).

IDE was never opened on this laptop either.

Disabling Real-time Protection on Windows defender worked for me on 2020.3.12f1 and Windows 10.

 

I love you. Thanks!

 

Thanks so much for this! Something like this should probably make shutting down IDE as a pre-requisite for any package being installed. Problem solved and would save way more hassle and time than one would lose by having to do so.

 

This was my issue too, thanks for sharing! The "quick and dirty" way I solved it was by moving the .git folder outside of my Unity project folder and then moving it back in.

 

Had gone through trying everything listed here but nothing would work. Ended up being Microsoft power toys. Closing it fixed the problem. Saw the solution on Reddit. hopefully this helps someone

 

This worked like a charm for me! Closing Powertoys automatically solved the issue, didn't even need to restart Unity.

 

Wow this worked for me also.... Thank you so much

 

SOLUTION!!!

 

Thank you so much.