Jupyter not letting me run code - anyone else facing this issue? or Why is Jupyter not letting me run

18 Replies, 730 Views

"Help! Jupyter not letting me run code - what’s going on?"

Hey guys,

Sooo jupyter not letting me run code all of a sudden? Like, it was working fine yesterday, and now it’s just stuck on the `[*]` thing. No error, nothing.

Tried restarting the kernel, reloading the page, even rebooted my laptop. Nada.

Anyone else facing this? Or know a quick fix?

Pls help, I’m kinda stuck here 😅

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OR

"Why is Jupyter not letting me run code all of a sudden?"

Yo,

Jupyter not letting me run code today for some reason. Cells just hang forever.

Checked the console—no errors. Tried a fresh notebook, same issue.

Is it just me? Or is something up with the latest update?

Kinda annoying ngl. Any tips?

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OR

"Jupyter not letting me run code - how do I fix this?"

Ugh, jupyter not letting me run code again.

Cells won’t execute, kernel seems alive but does nothing.

Already tried:
- Restarting kernel
- Clearing output
- Reinstalling jupyter

Still no luck. Anyone got a magic fix?

Thanks in advance!
Hey! Had the same issue last week—jupyter not letting me run code outta nowhere. Turns out my browser cache was messing things up.

Try clearing your browser cache or even switching browsers (Chrome to Firefox or vice versa). Also, check if you’ve got any extensions interfering.

Worked for me, hope it helps!
Ugh, jupyter not letting me run code is the worst. Had this happen when my kernel was stuck in a weird state.

Try this:
- Open a terminal and run `jupyter kernelspec list` to see if your kernel is corrupted.
- If it is, reinstall it with `pip install --upgrade ipykernel`.

Sometimes a fresh kernel install fixes everything.
Yo, same prob here! Jupyter not letting me run code randomly. Check your RAM usage—might be maxed out.

Open task manager (or `htop` if you’re on Linux) and see if Python’s eating all your memory. If it is, restart your machine and try again with fewer tabs open.

Also, maybe try `jupyter lab` instead of `jupyter notebook`—sometimes it’s more stable.
Jupyter not letting me run code? Classic. Could be a port conflict.

Run `jupyter notebook --port 8889` to force a different port. Sometimes 8888 is already taken by another process.

If that doesn’t work, check if your firewall’s blocking it. Windows Defender loves to mess with Jupyter for no reason.
Had this exact issue—jupyter not letting me run code, just hanging on `[*]`. Turns out it was a dependency conflict.

Run `pip check` to see if any packages are fighting each other. If you see errors, try `pip install --upgrade` on the conflicting ones.

Also, this guide saved me: [Jupyter Troubleshooting Docs](https://jupyter.org/troubleshooting.html).
Jupyter not letting me run code? Ugh, feel your pain. Try resetting the kernel connection:

1. Go to Kernel > Restart & Clear Output.
2. If that fails, shut down the kernel completely and reopen it.

If it’s still stuck, might be worth checking your Python env—sometimes conda/pip environments get weird.
Thanks for all the tips, guys! Cleared my browser cache and switched to Firefox, and now jupyter not letting me run code is fixed.

Weirdly, it was Chrome’s autofill extensions causing the hang. Never would’ve guessed that.

Gonna bookmark that troubleshooting doc too—super helpful! Cheers!
Bro, jupyter not letting me run code is so annoying. Had this happen when my notebook was too big.

Try splitting your code into smaller cells or saving a copy and deleting some output-heavy cells. Also, check if you’ve got any infinite loops running in the background.

If all else fails, export the notebook as .py and run it in a regular Python shell.
Jupyter not letting me run code? Sounds like a kernel issue. Try creating a fresh environment:

```
conda create -n jupyterfix python=3.9
conda activate jupyterfix
pip install jupyter
```

Sometimes a clean env fixes everything. Also, make sure you’re not running out of disk space—Jupyter hates that.



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