Rename-Item: Access to the path is denied (Flutter upgrade)

Question

My previous Flutter version is installed in C:\src\flutter.

When I try to upgrade Flutter, I get this error:

Downloading Dart SDK from Flutter engine
Rename-Item : Access to the path 'C:\src\flutter\bin\cache\dart-sdk' is denied.
At C:\src\flutter\bin\internal\update_dart_sdk.ps1:51 char:5
+     Rename-Item $dartSdkPath "$oldDartSdkPrefix$oldDartSdkSuffix"
+     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : WriteError: (C:\src\flutter\bin\cache\dart-sdk:String) [Rename-Item], IOException
    + FullyQualifiedErrorId : RenameItemIOError,Microsoft.PowerShell.Commands.RenameItemCommand

I think something is wrong with my drive permission on Windows, but I don't know how to solve it.

Answer 1

The problem is that Windows is unable to rename the dart-sdk folder. For me it was because the folder was locked by some processes. To solve such problem:

1. Go to Resource Monitor (on windows 10 : Task Manager > Performance > Open Resource Monitor)
2. CPU > Associated Handles
3. Search for dart-sdk
4. End processes locking the folder