Ask questions"Server returned 404" when trying to install different versions of extensions in VS Code

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  • VSCode Version: 1.45.1
  • OS Version: Windows 10

Steps to Reproduce:

  1. Open the extensions view and install the Python extension (or the Docker extension)
  2. Click to install a different version of the extension
  3. See the "Server returned 404" notification prompt

<!-- Launch with code --disable-extensions to check. --> Does this issue occur when all extensions are disabled?: No

The issue was originally filed here:, but it can also be reproduced with the Docker extension.


Log (Window):

[2020-06-09 10:59:40.899] [renderer1] [error] Server returned 404: Error: Server returned 404
    at Object.t.asJson (file:///C:/Users/luabud/AppData/Local/Programs/Microsoft VS Code/resources/app/out/vs/workbench/workbench.desktop.main.js:1839:954)
    at file:///C:/Users/luabud/AppData/Local/Programs/Microsoft VS Code/resources/app/out/vs/workbench/workbench.desktop.main.js:2030:39
    at async Promise.all (index 13)


Answer questions luabud

Which version are you trying to install?

I don't get to select a version, just by clicking on "Install version..." it throws that error.


I tried it with previous versions of the Python extension just in case, but that didn't change. And again, that can be reproduced with other extensions e.g. Docker and CMake Tools as said here. It's not happening to all extensions for me, it's working with the C/C++ extension.


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