Mac（OS X Sierra 10.12.6）Anaconda Jupyter Notebook无法启动求助

Hey there, I totally get how frustrating it is when Jupyter Notebook suddenly stops working on your Mac—especially after going through the hassle of reinstalling Anaconda 4.2.0 with no luck. Let’s break down some practical troubleshooting steps to get it back up and running:

1. Check Error Messages via Terminal #

The graphical launcher might fail silently, but running Jupyter directly in Terminal will almost always give you a clear error clue:

• Open Terminal and run: jupyter notebook
• Look closely at the output—common issues include port conflicts, missing dependencies, or corrupted config files.
  • If you see a "port already in use" error, try launching on a different port: jupyter notebook --port=8889

2. Reset Jupyter Configuration Files #

Corrupted config files are a frequent culprit for sudden launch failures. Let’s reset them safely:

• First, back up your existing config folder (just in case): mv ~/.jupyter ~/.jupyter_backup
• Generate a fresh set of config files: jupyter notebook --generate-config
• Try launching Jupyter again—this often fixes weird configuration glitches.

3. Test with a Clean Conda Environment #

Sometimes the main Anaconda environment gets messed up, even after reinstall. Creating a fresh isolated environment can help isolate the problem:

1. Create a new test environment (using Python 3.6, which is compatible with Anaconda 4.2.0): conda create -n jupyter_test python=3.6
2. Activate the environment: source activate jupyter_test (this is the correct activation command for Sierra-era Conda)
3. Install Jupyter in this environment: conda install jupyter
4. Launch Jupyter: jupyter notebook
   If this works, your main environment likely has corrupted dependencies—you can either migrate your projects to this new environment or troubleshoot the main one further.

4. Verify File Permissions #

Incorrect permissions on Jupyter’s working files can block it from launching:

• Check the permissions of your .jupyter folder: ls -ld ~/.jupyter (it should show something like drwxr-xr-x)
• If permissions are off, fix them with: chmod -R 755 ~/.jupyter
• As a quick test, you can try launching with sudo jupyter notebook (note: don’t use sudo long-term, but this will tell you if permissions are the root issue)

5. Check OS X Sierra-Specific Compatibility #

OS X Sierra 10.12.6 is an older release, so there are a few system-level things to check:

• Make sure you’ve installed all available system updates for Sierra (Apple’s final patches for this version can fix hidden compatibility bugs)
• Verify that your firewall or security software isn’t blocking Jupyter’s network access (port 8888 is the default, so ensure it’s allowed)

If none of these steps work, share the full error output you get when running jupyter notebook in Terminal—that will help narrow down the exact issue.

内容的提问来源于stack exchange，提问作者Prof Michael Huster