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I'm trying to install the Flutter extension on vs code but I always get this: "Error while installing 'Flutter' extension. Please check the log for more details." I tried renaming the .vscode/extensions.json and I also tried emptying it but nothing worked. And my Window user has full permission (Full Control)

This is the log:

2025-09-16 11:24:24.188 [info] [Window] Started local extension host with pid 29956.
2025-09-16 11:24:24.941 [info] [Cloud Changes] Prompting to enable cloud changes, has application previously launched from Continue On flow: false
2025-09-16 11:24:24.951 [info] [Window] Settings Sync: Account status changed from uninitialized to unavailable
2025-09-16 11:24:26.126 [info] [Window] ChatSessionStore: Migrating 0 chat sessions from storage service to file system
2025-09-16 11:24:26.406 [info] [Window] Started local extension host with pid 24652.
2025-09-16 11:24:27.162 [info] [Window] Settings Sync: Account status changed from uninitialized to unavailable
2025-09-16 11:24:27.214 [info] [Cloud Changes] Prompting to enable cloud changes, has application previously launched from Continue On flow: false
2025-09-16 11:24:28.850 [info] [Window] [perf] Render performance baseline is 17ms
2025-09-16 11:24:30.620 [error] [Network] #2: https://marketplace.visualstudio.com/_apis/public/gallery/extensionquery - error POST Canceled
2025-09-16 11:24:37.190 [error] [Window] Error: EPERM: operation not permitted, mkdir 'c:\Users\matha\.vscode\extensions\.27f63c96-a72c-43ea-a3cd-ad6a6b8ab5db'
    at async Object.mkdir (node:internal/original-fs/promises:859:10)
2025-09-16 11:24:37.199 [error] [Window] EPERM: operation not permitted, mkdir 'c:\Users\matha\.vscode\extensions\.27f63c96-a72c-43ea-a3cd-ad6a6b8ab5db': Error: EPERM: operation not permitted, mkdir 'c:\Users\matha\.vscode\extensions\.27f63c96-a72c-43ea-a3cd-ad6a6b8ab5db'
    at async Object.mkdir (node:internal/original-fs/promises:859:10)

1 Answer 1

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the errors:

2025-09-16 11:24:30.620 [error] [Network] #2: https://marketplace.visualstudio.com/_apis/public/gallery/extensionquery - error POST Canceled
2025-09-16 11:24:37.190 [error] [Window] Error: EPERM: operation not permitted, mkdir 'c:\Users\matha\.vscode\extensions\.27f63c96-a72c-43ea-a3cd-ad6a6b8ab5db'
    at async Object.mkdir (node:internal/original-fs/promises:859:10)
2025-09-16 11:24:37.199 [error] [Window] EPERM: operation not permitted, mkdir 'c:\Users\matha\.vscode\extensions\.27f63c96-a72c-43ea-a3cd-ad6a6b8ab5db': Error: EPERM: operation not permitted, mkdir 'c:\Users\matha\.vscode\extensions\.27f63c96-a72c-43ea-a3cd-ad6a6b8ab5db'
    at async Object.mkdir (node:internal/original-fs/promises:859:10)

clearly show you're not allowed to edit the path shown in the logs

you need to make sure to clean-install your VS code instance so that no permission problems can occur.

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