# Stuck at starting/restarting kernel in jupyterlab

**URL:** <https://discourse.julialang.org/t/stuck-at-starting-restarting-kernel-in-jupyterlab/29991>\
**Category:** New to Julia\
**Tags:** question\
**Created:** [October 16, 2019, 3:39pm UTC](https://discourse.julialang.org/t/stuck-at-starting-restarting-kernel-in-jupyterlab/29991 "2019-10-16T15:39:19Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![watanabexia](https://avatars.discourse-cdn.com/v4/letter/w/e8c25b/32.png) [@watanabexia](https://discourse.julialang.org/u/watanabexia)\
**Post date:** [October 16, 2019, 3:39pm UTC](https://discourse.julialang.org/t/stuck-at-starting-restarting-kernel-in-jupyterlab/29991/1 "2019-10-16T15:39:19Z")

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I can still use julia 1.2.0 kernel on JupyterLab this morning. When I take my laptop back home, the kernel stuck at starting/restarting like this:

 ![47%20PM](https://global.discourse-cdn.com/julialang/original/3X/6/5/65e8989d57cfa149e6f7ce2b4ca9ece853fbf467.png)

The kernel keeps starting or restarting, and I can’t execute any code. Could anybody help me?

I am using OSX.

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**Author:** ![feanor12](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/feanor12/32/8212_2.png) [@feanor12](https://discourse.julialang.org/u/feanor12)\
**Post date:** [October 16, 2019, 4:02pm UTC](https://discourse.julialang.org/t/stuck-at-starting-restarting-kernel-in-jupyterlab/29991/2 "2019-10-16T16:02:13Z")

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Maybe restart jupyterlab. Could be a network issue if you are not using 127.0.0.1 .  
Also calling `]build IJulia` and restarting jupyter can help sometimes.  
Using Julia 1.3-rc3 I had problems with really long compile times in jupyter.

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**Author:** ![watanabexia](https://avatars.discourse-cdn.com/v4/letter/w/e8c25b/32.png) [@watanabexia](https://discourse.julialang.org/u/watanabexia)\
**Post date:** [October 17, 2019, 12:00am UTC](https://discourse.julialang.org/t/stuck-at-starting-restarting-kernel-in-jupyterlab/29991/4 "2019-10-17T00:00:34Z")

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Thanks! The kernel starts perfectly when I go back to school. I’ve tried restarting jupyter and rebuilding IJulia at home but none of which work. I am not sure if it is a network issue or not. Thanks for your reply anyway.