extension activation failed run the 'developer toggle

github.com › microsoft › vscode-python › issues › 24665

Extension activation failed, run the 'Developer: Toggle Developer Tools' command for more information. · Issue #24665 · microsoft/vscode-python

December 29, 2024 - in Extension activation failed, run the 'Developer: Toggle Developer Tools' command for more information. workbench.desktop.main.js:3105 Extension activation failed, run the 'Developer: Toggle Developer Tools' command for more information. ...

Author Charan208

github.com › microsoft › vscode-python › issues › 18109

Extension Activation failed · Issue #18109 · microsoft/vscode-python

December 3, 2021 - " Sorry, something went wrong activating IntelliCode support for Python. Please check the "Python" and "VS IntelliCode" output windows for details." And when I try running any python code, I get: "Couldn't start client Java Language Server" The python extension keeps loading as well. Open any python code in VSC. Try to run the code.

Author sherxyar

Discussions

Jupyter extension activation fails

Extension activation failed run the 'Developer: Toggle Developer Tools' command for more information More on github.com

github.com

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February 14, 2023

Unable to debugger for python , it says "Extension activation failed, run the 'Developer: Toggle Developer Tools' command for more information."

Unable to debugger for python , it says "Extension activation failed, run the 'Developer: Toggle Developer Tools' command for more information." · Activating extension 'ms-python.python' failed: Extension 'ms-python.python' CANNOT use API proposal: terminalShellIntegration. More on community.firebasestudio.dev

community.firebasestudio.dev

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September 6, 2024

Extensions are not activated properly in VSCode app

In OOD, I installed VS Code interactive app and code-server works fine. But when I try to install ms-python extension to use python debugger, the extension is not activated and stuck after printing “Activating Extension”. When I launch code-server without using ood and just using bash, ... More on discourse.openondemand.org

discourse.openondemand.org

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March 13, 2023

Jupyter Extension Activation Failed Can't Run Any Notebook Cells. HELPP

Role back to last months vsix release by downloading and installing it manually. Worked for me More on reddit.com

r/vscode

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October 9, 2025

Stack Overflow

stackoverflow.com › questions › 73551978 › python-extension-activation-failed-run-the-developer-toggle-developer-tools

visual studio code - Python "Extension activation failed, run the 'Developer: Toggle Developer Tools' command for more information" - Stack Overflow

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I also had to downgrade the Jupyter extension to version 2025.6 instead of 2025.7. I have VS Code version 1.103.2 on macOS. After that, the list of Python Environments was loading correctly.

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For example I have "Extension" named Python in the image below that gets updated or installed by vsCode automatically

You have to wait for the "Extensions" to be installed.
Make sure you have an internet connection.
make sure you have a fast internet connection so that it can be installed faster.
After installation restart "vsCode"

If it doesn't work for you, try uninstalling the extension and reinstalling it

This is all I know and it happened to me

github.com › microsoft › vscode › issues › 174376

Jupyter extension activation fails · Issue #174376 · microsoft/vscode

February 14, 2023 - Extension activation failed run the 'Developer: Toggle Developer Tools' command for more information

Author mlangiu

Firebase Studio Community

community.firebasestudio.dev › general

Unable to debugger for python , it says "Extension activation failed, run the 'Developer: Toggle Developer Tools' command for more information." - General - Firebase Studio Community

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Hey folks, a quick update — we are actively working to find a solution here, but in the meantime the workaround, as @Kais_Radwan pointed out, is to install an earlier version of the Python extension. Here’s how you can do that in your .idx/dev.nix: ... extensions = [ # (10/23/2024) P…

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Have tried to dig into there? For me it says Activating extension 'ms-python.python' failed: Extension 'ms-python.python' CANNOT use API proposal: terminalShellIntegration. Its package.json#enabledApiProposals-property declares: contribEditorContentMenu, quickPickSortByLabel, testObserver, quickPi…

Open OnDemand

discourse.openondemand.org › get help

Extensions are not activated properly in VSCode app - Get Help - Open OnDemand

Hello Jeff, Here’s the remote extension host log. There is an error but I’m not sure it is relevant to the activation issue or not. 2023-03-14 00:12:50.082 [info] Extension host with pid 1966856 started 2023-03-14 00:12:50.082 [error] Error: EACCES: permission denied, open '/tmp/vscode-ipc' 2023-…

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I have an issue too trying to load the jupyter module that it depends on. Here’s how you can look at the logs: Open the navigation menu (the hamburger/3 lines in the top left corner) Go to View Go to Command Palette ... And you’ll get this drop down menu, in which you need to find Developoer: O…

Arch Linux Forums

bbs.archlinux.org › viewtopic.php

[SOLVED] VS Code, after upgrading: Python extension fails to load...? / Applications & Desktop Environments / Arch Linux Forums

January 3, 2023 - UPDATE: I found https://github.com/microsoft/vscode-python/issues/15445 and now understand that I should use the CONSOLE-stuff from Help > Toggle Developer Tools. This reveals: *** Extension activation failed, run the 'Developer: Toggle Developer Tools' command for more information.

reddit.com › r/vscode › jupyter extension activation failed can't run any notebook cells. helpp

r/vscode on Reddit: Jupyter Extension Activation Failed Can't Run Any Notebook Cells. HELPP

October 9, 2025 -

Hey everyone,

I'm running into a persistent issue with the Jupyter extension in VS Code and I'm hoping someone can point me in the right direction.

I'm trying to run a simple Python cell in a .ipynb notebook, but I can't execute anything because the Jupyter extension fails to start. As you can see in the screenshot, I keep getting the error notification: Extension activation failed, run the 'Developer: Toggle Developer Tools' command for more information.

What I've Tried So Far:

Reinstalling: I have completely uninstalled and reinstalled the Jupyter extension (and its related dependencies like the Python extension) multiple times.
Restarts: I have closed and reopened VS Code, and even restarted my computer.
New Environments: I've created fresh virtual environments (using venv) and installed ipykernel within them, but the issue persists no matter which interpreter I select.
Different Files: This happens with any notebook file, even a brand new one with a single print() statement.

I feel like I'm missing something obvious, but I can't figure out what

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Role back to last months vsix release by downloading and installing it manually. Worked for me

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Reinstall the extension and make sure that you have ipykernel package installed

Find elsewhere

Google Bing Mojeek

YouTube

youtube.com › coderide

extension activation failed run the developer toggle python - YouTube

03:26

Instantly Download or Run the code at https://codegive.com title: troubleshooting extension activation failed in python: a developer's guideintroduction:ext...

Published March 16, 2024

Views 363

reddit.com › r/vscode › having an issue with the python extension

r/vscode on Reddit: Having an issue with the Python Extension

February 23, 2023 -

Hello, I am trying to download the Python extension from Microsoft and it's not working, I am getting this error:

Extension activation failed, run the 'Developer: Toggle Developer Tools' command for more information.

Additionally at the bottom, the spinning "Python extension loading..." just never finishes loading. I'm trying to debug my code and can't, can anyone help? Thank you !

Uninstall vscode and reinstall it. Or install a pre-release version of the Python extension

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What does the developer tools show? At work I had ssl certificate issues. Could be something like that.

ServiceNow Community

servicenow.com › community › developer-forum › vs-code-extension-error-activating-extension-servicenow-now › td-p › 2692847

VS Code Extension Error Activating extension ServiceNow.now-vscode failed: Cannot find module keytar

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Heyo - I starting getting the same error after VScode updated to its September 2023 release. Installing the August 2023 version of vscode seem to fix the issue for now

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Hello, · · I found something similar in the below post:- · https://www.servicenow.com/community/developer-forum/error-cannot-find-module-build-release-keytar-n... · Please mark answer correct/helpful based on impact.

Ask an AI

askan.ai › how-to-fix-error-extension-activation-failed-run-the-developer-toggle-developer-tools-command-for-more-information-in

how to fix error Extension activation failed, run the 'Developer: Toggle Developer Tools' command for more information. in vscode

The error message "Extension activation failed" in Visual Studio Code (VSCode) usually means that there was an issue with the installation or loading of a specific extension. Here are some steps you can follow to troubleshoot and potentially fix the issue: 1. **Toggle Developer Tools**: - Press ...

github.com › microsoft › vscode-jupyter › issues › 6283

Extension activation failed · Issue #6283 · microsoft/vscode-jupyter

June 15, 2021 - "Extension activation failed, run the 'Developer: Toggle Developer Tools' command for more information."

Author mackellardrew

github.com › microsoft › vscode-python › issues › 24272

python extension activation failed · Issue #24272 · microsoft/vscode-python

October 8, 2024 - Python extension activation failed Message: run the Developer toggle developer tools command for more information Developer: Toggle Developer Tools command missing Version: 1.89.1 Commit: cf213cd39a3bfb26ce45d2c85949fee44b9d03d9 User Age...

Author CorneliuPopescu

HatchJS

hatchjs.com › home › extension activation failed: run the ‘developer toggle’

Extension Activation Failed: Run the 'Developer Toggle'

January 5, 2024 - Make sure that the developer toggle is enabled in your browser’s settings. Try reinstalling the extension. Update the extension to the latest version. Contact the developer of the extension for help. Q: What does it mean when an extension activation fails?

Apple Developer

developer.apple.com › documentation › xcode › enabling-developer-mode-on-a-device

Enabling Developer Mode on a device | Apple Developer Documentation

Grant or deny permission for locally installed apps to run in iOS, iPadOS, watchOS, and visionOS.

github.com › microsoft › vscode-python › issues › 22995

Python extension loading issue · Issue #22995 · microsoft/vscode-python

February 28, 2024 - Type: Bug Extension activation failed, run the 'Developer: Toggle Developer Tools' command for more information. Extension version: 2024.3.10581547 VS Code version: Code 1.86.2 (903b1e9d899...

Author krrishna2001

github.com › microsoft › vscode-python › issues › 24018

Python Extension Activation Failures and Inconsistent Behavior · Issue #24018 · microsoft/vscode-python

August 28, 2024 - Extension activation failed: Extension activation failed, run the 'Developer: Toggle Developer Tools' command for more information.

Author bzmarkovits