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

The error message "Extension activation failed" usually indicates that a Visual Studio Code (VS Code) extension didn't load properly. Here are some steps you can follow to troubleshoot and resolve the issue: 1. **Toggle Developer Tools**: - Open VS Code. - Press `Ctrl + Shift + I` (or `Cmd + Option + I` on macOS) to open the Developer Tools. - Look for any error messages in the Console tab. This could give you clues as to why the extension is failing to activate. 2. **Check Extension Compatibility**: - Make sure the extension is compatible with your version of VS Code. You can check the extension's page in the marketplace for compatibility information. - If you've recently updated VS Code, some extensions may not be fully compatible with the new version yet. 3. **Reinstall the Extension**: - Go to the Extensions view by clicking the Extensions icon in the Activity Bar on the side of the window. - Search for the extension that's causing the issue and uninstall it. - After uninstalling, restart VS Code and reinstall the extension from the marketplace. 4. **Check for Updates**: - Ensure that both your VS Code and the extensions you are using are up to date. - You can check for VS Code updates by going to Help > Check for Updates (on Windows/Linux) or Code > Check for Updates (on macOS). 5. **Disable Other Extensions**: - Sometimes, conflicts between extensions can cause issues. Try disabling other extensions to see if the problem persists. - You can disable extensions temporarily and then enable them one by one to identify the conflicting extension. 6. **Check for Workspace Settings**: - Sometimes, workspace settings may prevent an extension from loading correctly. Check your `.vscode/settings.json` file for any settings that may affect the extension. 7. **User Data/Cache Cleanup**: - It might help to clean up your user data or cache. This can typically be done by: - Closing VS Code and navigating to your user data directory. - On Windows: `%APPDATA%\Code` - On macOS: `~/Library/Application Support/Code` - On Linux: `~/.config/Code` - You may want to back up this directory and then try starting VS Code again. 8. **Check for Logs**: - If the issue persists, consult the logs. You can find more details in `Help > Toggle Developer Tools > Console` for any other errors or warnings related to the extensions. 9. **Reach Out for Support**: - If you're still stuck, you can consider reaching out for support through the extension's repository on GitHub or the Visual Studio Code community forums. By following these steps, you should be able to diagnose and potentially fix the issue with the extension failing to activate.