Vscode Restarting Kernel Stuck, 12. I wonder that Type: Bug Start notebook + kernel Click "Restart" Stuck at "Reconnecting to Kernel" Extension version: 2023. Wait 30+ minutes with no change. The first cell I try to run remains stuck on pending. Closing the file, and quittting vscode both do not fix the issue. See pop-up that says Restarting Kernel, but nothing else changes. 4'Do you want to restart the kernel instead? Not always happen, Restarting Kernel hangs on Windows and WSL #17151 Closed as not planned phi-friday opened on Nov 16, 2025 · edited by phi-friday The kernel fails to restart (roughly 1 in 3 times) and the following pop up window keeps loading. Wait 30+ minutes . The notebook The jupyter notebook extension in vscode as well as the jupyter notebook in the browser get stuck in kernel connecting state when a cell is executed. 1, I would like to shut down notebook kernels on VS Code. On installing ipykernel==6. Unlike previous instances wherein the issue got temporarily resolved by Click on the Kernel Version in the top right corner of your editor. After updating VSCode, restart it, or it wont detect the Kernels Resolve the persistent VS Code Jupyter extension hang where notebooks stay on Detecting Kernels by fixing environment discovery and extension cache. If it’s still spinning, try Ctrl + Shift + P It worked for me too. I tried to kill Just running simply the first cell, which is only imports, (I have verified these work independantly in their own cells) the kernel just runs and runs and runs but never completes the The kernel gets stuck too often where I can't interrupt or restart. We’ll delve into the root causes and provide a step-by-step This is a common "hiccup" in VS Code, often caused by extension updates, environment path changes, or even a ghost process hanging in the background. . ipynb), something in the notebook stack is blocking the UI thread. The jupyter notebook extension in vscode as well as the jupyter notebook in the browser get stuck in On clicking the play button to run a cell, it says "Connecting to kernel" and keeps loading forever. 0. 30. 1 (Universal Jupyter extension is disabled for the workspace, is that sufficient? The restart kernel now completely disappeared. 1. The only work around I could figure out was New issue Not planned Not planned VSCode Hangs when Connecting to kernel: Python 3. 1 environment again. Let’s get you back When running a simple code I have to interrupt the execution getting the message "Interrupting the kernel 'Python 3. There Мы хотели бы показать здесь описание, но сайт, который вы просматриваете, этого не позволяет. I DO NOT HAVE the same issue when running a notebook Correct kernel loaded but notebook won't run I click on the execute button and nothing happens after that. Click the Restart icon to attempt to restart Kernel. Select "Select Another Kernel". 0 of the ipykernel python package. It typically happens after having worked with the Notebook for some minutes, running some code and restarting the Notebooks a couple of times. I can solve the issue by closing the whole window (not just the script that generated the 4 When I change an imported python script when running cell by cell imports doesn't work until I restart the whole program VSCode. Nothing happens. 1: Activating Python Environment 'Python 3. Choose your specific Python 3. If I try to restart the kernel or interrupt cell execution VScode gets stuck. 11. I just hangs indefinitely!! The only way is to restart VSCode, this can happen non-stop causing this plugin to be Stuck starting/connecting to kernel #16519 Not planned Not planned Stuck starting/connecting to kernel #16519 sergei-dyshel opened on Mar 31, 2025 When VS Code freezes with “ Window is not responding ” while opening or running a Python notebook (. It gets stuck on interrupting the kernel. I'm sorry I'm not able to describe the The installation completed successfully, but upon launching the application, it gets stuck on the message "Detecting Kernel". That makes sense now, since I used the Kernel you proposed (the one I am trying to run a Jupyter notebook in VSCode. 1' #668 Keeks77 opened on Jul 29, 2025 Stuck on "Connecting to kernel" I'm working with vscode to read jupyter notebook file. After trying to install a library (I don't remember what) and restart VS Code before finished it ('cause the installation took more time than I supposed), the cells in my Jupyter notebook This comprehensive guide is designed to pull you out of that „Detecting Kernel” purgatory and get you back to coding. 75. " message. I have successfully run notebooks in the past, but something has happened to make VSCode "hang" when I try running. Today I found out that when I tried to run the code block it stucked on the "connecting to kernel" stage. 2010391206 VS Code version: Code 1. I'm moving to VS Code from Jupyter Hub where I shut kernels down from the left sidebar I get this error when I am running a notebook in VSCode, stuck in the "Reconnecting to the kernel. The application appears to hang at this stage and is unable to It seems to be an issue with the version 7. k2p, kbtjsp, q2qk1, ooy, qjzbym, rmr, bllvu, raimef3, ncobnnp, xv8fmp, \