René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"\"This action is restricted\" Internet Explorer dialog when opening browser in Windows with no default browser","articleBody":"Moved from https://github.com/jupyterlab/jupyterlab/issues/14142, per [this comment](https://github.com/jupyterlab/jupyterlab/issues/14142#issuecomment-1458872683) that suggests that the fault is in [this file](https://github.com/python/cpython/blob/54060ae91da2df44b3f6e6c698694d40284687e9/Lib/webbrowser.py#L550) in CPython.\r\n\r\n## Description\r\n\r\nOn a Windows 10 computer with Firefox set as the default browser, running `jupyter lab` causes a dialog box to appear: \"Internet Explorer / This action is restricted. For more information, please contact your system administrator.\"\r\n\r\n![ie-popup](https://user-images.githubusercontent.com/93281816/223282642-4bfef503-efaf-4720-9eec-f38a4ddd89b1.png)\r\n\r\nAfter I dismiss the dialog, Microsoft Edge pops up with the JupyterLab URL specified in the terminal.\r\n\r\nOn this Windows machine, there is no default browser set.\r\n\r\n![image (4)](https://user-images.githubusercontent.com/93281816/223282666-4c25c01c-2404-4eb4-8623-dd61cf1678ba.png)\r\n\r\n## Reproduce\r\n\r\n\u003c!--Describe step-by-step instructions to reproduce the behavior--\u003e\r\n\r\n1. Set up a new Windows 10 machine with no default browser.\r\n2. Install JupyterLab via Conda (`conda install jupyterlab`).\r\n3. Run JupyterLab from the terminal (`jupyter lab`)\r\n4. See behavior shown above.\r\n\r\n\u003c!--Describe how you diagnosed the issue. See the guidelines at\r\n https://jupyterlab.readthedocs.io/en/latest/getting_started/issue.html --\u003e\r\n\r\n## Expected behavior\r\n\r\nIf no default browser is selected, the `jupyter` executable does not attempt to launch any browser, but instead displays the URL to load with no further action. This would be similar behavior to when the user runs `jupyter lab` with the `--no-browser` parameter.\r\n\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-103212\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/JasonWeill","@type":"Person","name":"JasonWeill"},"datePublished":"2023-03-08T01:15:17.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":4},"url":"https://github.com/102520/cpython/issues/102520"}