# Trouble with IJulia after upgrade to 1.3.1

**URL:** <https://discourse.julialang.org/t/trouble-with-ijulia-after-upgrade-to-1-3-1/34412>\
**Category:** General Usage\
**Created:** [February 10, 2020, 1:59pm UTC](https://discourse.julialang.org/t/trouble-with-ijulia-after-upgrade-to-1-3-1/34412 "2020-02-10T13:59:28Z")\
**Posts on this page:** 9\
**Page:** 1

<div class="post-metadata">

**Author:** ![leiteiro](https://avatars.discourse-cdn.com/v4/letter/l/b5e925/32.png) [@leiteiro](https://discourse.julialang.org/u/leiteiro)\
**Post date:** [February 10, 2020, 1:59pm UTC](https://discourse.julialang.org/t/trouble-with-ijulia-after-upgrade-to-1-3-1/34412/1 "2020-02-10T13:59:28Z")

</div>

After switching to Julia 1.3.1 IJulia does not work any more on my system. In the output below you can see what happened.

The installation of Jupyter went well. But the call notebook() shows some info about the environment and then immediately returns. No browser opens.

* * *

```
  | | |_| | | | (_| | | Version 1.3.1 (2019-12-30)
 _/ |\ __'_|_|_|\__'_| | Official https://julialang.org/ release  
|__/ |

julia> using IJulia
[Info: Precompiling IJulia [7073ff75-c697-5162-941a-fcdaad2a7d2a]

julia> notebook()
install Jupyter via Conda, y/n? [y]: y
[ Info: Downloading miniconda installer ...
[ Info: Installing miniconda ...

```

… many packages downloaded and installed  
… seemingly all went fine  
But then:

```
julia> notebook()

Info: running setenv(`'C:\Users\Home\.julia\conda\3\Scripts\jupyter.exe' notebook`,
["PATH=C:\\Users\\Home\\.julia\\conda\\3\\Library\\bin;
C:\\Users\\Home\\.julia\\conda\\3\\Scripts;
"JULIA_PROJECT=C:\\Users\\Home\\JuliaProjects\\IS.jl", 
"CONDA_PREFIX=C:\\Users\\Home\\.julia\\conda\\3", 
... and many more ... ])
Process(setenv(`'C:\Users\...) ProcessExited(1))

julia>

```

---

<div class="post-metadata">

**Author:** ![stevengj](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/stevengj/32/71_2.png) [@stevengj](https://discourse.julialang.org/u/stevengj)\
**Post date:** [February 10, 2020, 3:07pm UTC](https://discourse.julialang.org/t/trouble-with-ijulia-after-upgrade-to-1-3-1/34412/2 "2020-02-10T15:07:43Z")

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See my advice [in another thread](https://discourse.julialang.org/t/i-cant-open-the-notebooks-via-ijulia/34395/4).

---

<div class="post-metadata">

**Author:** ![leiteiro](https://avatars.discourse-cdn.com/v4/letter/l/b5e925/32.png) [@leiteiro](https://discourse.julialang.org/u/leiteiro)\
**Post date:** [February 10, 2020, 3:37pm UTC](https://discourse.julialang.org/t/trouble-with-ijulia-after-upgrade-to-1-3-1/34412/3 "2020-02-10T15:37:35Z")

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Thanks! I have tried that. Now the browser opens.

But in the list of kernels 1.3.1 does not show up.

Then I tried with 1.4.0-rc1. This time the kernel is in the list but immediately dies.

---

<div class="post-metadata">

**Author:** ![stevengj](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/stevengj/32/71_2.png) [@stevengj](https://discourse.julialang.org/u/stevengj)\
**Post date:** [February 10, 2020, 4:10pm UTC](https://discourse.julialang.org/t/trouble-with-ijulia-after-upgrade-to-1-3-1/34412/4 "2020-02-10T16:10:30Z")

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> [@leiteiro](#):
>
> Thanks! I have tried that. Now the browser opens.

What exactly did you try that fixed the problem? (I suggested 3 things in the link.)

> [@leiteiro](#):
>
> But in the list of kernels 1.3.1 does not show up.

Try `build IJulia` — this re-installs the kernel file (which maybe you deleted in an earlier attempt to fix things?)

---

<div class="post-metadata">

**Author:** ![leiteiro](https://avatars.discourse-cdn.com/v4/letter/l/b5e925/32.png) [@leiteiro](https://discourse.julialang.org/u/leiteiro)\
**Post date:** [February 10, 2020, 4:43pm UTC](https://discourse.julialang.org/t/trouble-with-ijulia-after-upgrade-to-1-3-1/34412/5 "2020-02-10T16:43:50Z")

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> [@stevengj](#):
>
> What exactly did you try that fixed the problem? (I suggested 3 things in the link.)

I tried one thing after the other. So it was the third step.

> [@stevengj](#):
>
> Try `build IJulia` — this re-installs the kernel file (which maybe you deleted in an earlier attempt to fix things?)

I’ve done this before, but I do it again … and something new:

| | |_| | | | (_| | | Version 1.3.1 (2019-12-30)  
_/ |\ __‘_|_|_|\__ ’\_| | Official [https://julialang.org/](https://julialang.org/) release

julia\> using Pkg

julia\> Pkg.build(“IJulia”)  
Building Conda ──→ `C:\Users\Home\.julia\packages\Conda\OIHWB\deps\build.log`  
Building MbedTLS → `C:\Users\Home\.julia\packages\MbedTLS\a1JFn\deps\build.log`  
Building IJulia ─→ `C:\Users\Home\.julia\packages\IJulia\yLI42\deps\build.log`  
false

Do you see this little unexplained ‘false’? I haven’t seen it before.  
Perhaps I should add that I am on Windows 10.

---

<div class="post-metadata">

**Author:** ![leiteiro](https://avatars.discourse-cdn.com/v4/letter/l/b5e925/32.png) [@leiteiro](https://discourse.julialang.org/u/leiteiro)\
**Post date:** [February 10, 2020, 5:10pm UTC](https://discourse.julialang.org/t/trouble-with-ijulia-after-upgrade-to-1-3-1/34412/6 "2020-02-10T17:10:21Z")

</div>

And now 1.3.1 shows up in the list of kernels, but the behavior is the same: no connection to the nb-server could be established.

---

<div class="post-metadata">

**Author:** ![stevengj](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/stevengj/32/71_2.png) [@stevengj](https://discourse.julialang.org/u/stevengj)\
**Post date:** [February 10, 2020, 7:24pm UTC](https://discourse.julialang.org/t/trouble-with-ijulia-after-upgrade-to-1-3-1/34412/7 "2020-02-10T19:24:54Z")

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It works fine for me. Maybe you have firewall software installed that is blocking the Jupyter web server? Does a Python notebook work?

---

<div class="post-metadata">

**Author:** ![leiteiro](https://avatars.discourse-cdn.com/v4/letter/l/b5e925/32.png) [@leiteiro](https://discourse.julialang.org/u/leiteiro)\
**Post date:** [February 10, 2020, 8:18pm UTC](https://discourse.julialang.org/t/trouble-with-ijulia-after-upgrade-to-1-3-1/34412/8 "2020-02-10T20:18:52Z")

</div>

Python works, C# works.  
And then there’s the timing: it worked before with Julia, only with the installation of 1.3.1 it stopped.

---

<div class="post-metadata">

**Author:** ![leiteiro](https://avatars.discourse-cdn.com/v4/letter/l/b5e925/32.png) [@leiteiro](https://discourse.julialang.org/u/leiteiro)\
**Post date:** [February 11, 2020, 6:40am UTC](https://discourse.julialang.org/t/trouble-with-ijulia-after-upgrade-to-1-3-1/34412/9 "2020-02-11T06:40:56Z")

</div>

When executing jupyter-notebook.exe directly I get the error below.

```
[I 07:05:51.941 NotebookApp] Serving notebooks from local directory: 
C:\Users\Home\AppData\Local\Python\Python38\Scripts
[I 07:05:51.941 NotebookApp] The Jupyter Notebook is running at:
[I 07:05:51.941 NotebookApp] http://localhost:8888/?token=15
    To access the notebook, open this file in a browser:
    file:///C:/Users/Home/AppData/Roaming/jupyter/runtime/nbserver-11344-open.html
[I 07:06:09.445 NotebookApp] Creating new notebook in
[I 07:06:11.453 NotebookApp] Kernel started: ba768ed8-aa83-45d8-85d5-d7a0e18a10c3
[W 07:06:11.525 NotebookApp] 404 GET /nbextensions/widgets/notebook/js/extension.js? 
v=20200211070550 (::1) 60.00ms 
 referer=http://localhost:8888/notebooks/Untitled.ipynb?kernel_name=julia-1.3
						 
ERROR: LoadError: ArgumentError: Package IJulia not found in current path:
- Run `import Pkg; Pkg.add("IJulia")` to install the IJulia package.
Stacktrace:
 [1] require(::Module, ::Symbol) at .\loading.jl:887
 [2] include at .\boot.jl:328 [inlined]
 [3] include_relative(::Module, ::String) at .\loading.jl:1105
 [4] include(::Module, ::String) at .\Base.jl:31
 [5] exec_options(::Base.JLOptions) at .\client.jl:287
 [6] _start() at .\client.jl:460
in expression starting at C:\Users\Home\.julia\packages\IJulia\yLI42\src\kernel.jl:1
[I 07:06:17.420 NotebookApp] KernelRestarter: restarting kernel (1/5), keep random ports

```

Run `import Pkg; Pkg.add("IJulia")` to install the IJulia package.  
This error-message is absurd and contradictory. Look at the line:  
in expression starting at C:\Users\Home.julia\packages\IJulia\yLI42\src\kernel.jl:1