Extension install/update fails with invalid VSIX zip in 1.111.0 (Windows)

[GORCHEN]

VS Code Version

1.111.0 (commit ce099c1), x64

OS Version

Windows 11 10.0.26200 x64

Repro Steps

1. Open VS Code 1.111.0
2. Auto-update or run install by ID for ms-python.python
3. Observe failure

Actual

Extension install/update fails with:
End of central directory record signature not found. Either not a zip file, or file is truncated.

Expected

Extension should install/update successfully.

Evidence

• sharedprocess.log shows repeated:
  • Failed downloading vsix...
  • Error while installing extension ... End of central directory...
• verbose CLI log shows repeated HTTP 403 on VSIX URL:
  • ...VSIXPackage?redirect=true&targetPlatform=win32-x64&update=true - end GET 403
  • ...VSIXPackage?targetPlatform=win32-x64&update=true - end GET 403
• Manual local VSIX install works, indicating install pipeline receives non-VSIX payload in this path.

[Joey0609]

Same problem
Serious bug

[HonokaRen]

2026-03-13 09:10:34.148 [error] [窗口] End of central directory record signature not found. Either not a zip file, or file is truncated.: Error: End of central directory record signature not found. Either not a zip file, or file is truncated.
at Ob (file:///c:/Program%20Files/Microsoft%20VS%20Code/ce099c1ed2/resources/app/out/vs/code/electron-utility/sharedProcess/sharedProcessMain.js:450:28625)
at file:///c:/Program%20Files/Microsoft%20VS%20Code/ce099c1ed2/resources/app/out/vs/code/electron-utility/sharedProcess/sharedProcessMain.js:450:29929
at c:\Program Files\Microsoft VS Code\ce099c1ed2\resources\app\node_modules\yauzl\index.js:40:7
at c:\Program Files\Microsoft VS Code\ce099c1ed2\resources\app\node_modules\yauzl\index.js:190:5
at c:\Program Files\Microsoft VS Code\ce099c1ed2\resources\app\node_modules\yauzl\index.js:712:5
at c:\Program Files\Microsoft VS Code\ce099c1ed2\resources\app\node_modules\yauzl\fd-slicer.js:33:7
at FSReqCallback.wrapper [as oncomplete] (node:fs:671:5)

Same problem

[micheleIT]

Same problem for latest 1.110.1-1772839366 in Ubuntu 24.04. But even a downgrade didn't fixed it, so probably not a client but a marketplace issue.

[aguiller31]

Same issue for same all vscode versions, seems to be a Marketplace issue

[daleksan]

manual installation also doesn't work for me

[EFX1SZH]

[error] [Window] End of central directory record signature not found. Either not a zip file, or file is truncated.: Error: End of central directory record signature not found. Either not a zip file, or file is truncated.
at Ob (file:///d:/Software/Microsoft%20VS%20Code/ce099c1ed2/resources/app/out/vs/code/electron-utility/sharedProcess/sharedProcessMain.js:450:28625)
at file:///d:/Software/Microsoft%20VS%20Code/ce099c1ed2/resources/app/out/vs/code/electron-utility/sharedProcess/sharedProcessMain.js:450:29929
at d:\Software\Microsoft VS Code\ce099c1ed2\resources\app\node_modules\yauzl\index.js:40:7
at d:\Software\Microsoft VS Code\ce099c1ed2\resources\app\node_modules\yauzl\index.js:190:5
at d:\Software\Microsoft VS Code\ce099c1ed2\resources\app\node_modules\yauzl\index.js:712:5
at d:\Software\Microsoft VS Code\ce099c1ed2\resources\app\node_modules\yauzl\fd-slicer.js:33:7
at FSReqCallback.wrapper [as oncomplete] (node:fs:671:5)

[bashmhaddad]

Same issue here
Even if I go back to the previous version or an older version, it does not work anymore
The moment you update something gets corrupted ...

[KOTUDEV]

I've deleted all the plugins and reinstalled them, but I still can't install anything—not even the Python plugin. I'm about to break down.

[sleep4at]

The same error occurred after installing or updating the extension.
I suspect the Marketplace package format has changed, because the file I manually downloaded was .VSIXPackage instead of .vsix, and VS Code doesn't seem to recognize this format.
So I manually changed .VSIXPackage to .vsix, and it worked temporarily.

[bashmhaddad]

I am trying to do the Python extension and the Python debugger extension manually. The problem is that they have a cyclic dependency: each tries to install the other by downloading and installing it, and it encounters the same error.
It does not matter which one you do first; it will always crash

[MasterJanus]

same error

版本: 1.111.0 (user setup)
提交: ce099c1
日期: 2026-03-06T23:06:10Z
Electron: 39.6.0
ElectronBuildId: 13330601
Chromium: 142.0.7444.265
Node.js: 22.22.0
V8: 14.2.231.22-electron.0
OS: Windows_NT x64 10.0.26200

[kanjibrian]

Just switch to Antigravity IDE. It currently works, it is free, and it is a fork of VSCode.