I can't open the notebooks via IJulia

[Pedro_Luiz]

julia> using IJulia

julia> notebook()
[ Info: running setenv(`'C:\Users\Pedro Luiz\.julia\conda\3\Scripts\jupyter.exe' notebook`,["PATH=C:\\Users\\Pedro Luiz\\.julia\\conda\\3\\Library\\bin;C:\\Users\\Pedro Luiz\\.julia\\conda\\3\\Scripts;C:\\windows\\system32;C:\\windows;C:\\windows\\System32\\Wbem;C:\\windows\\System32\\WindowsPowerShell\\v1.0\\;C:\\windows\\System32\\OpenSSH\\;C:\\Program Files (x86)\\NVIDIA Corporation\\PhysX\\Common;C:\\Program Files\\NVIDIA Corporation\\NVIDIA NvDLISR;C:\\Program Files (x86)\\Intel\\Intel(R) Management Engine Components\\DAL;C:\\Program Files\\Intel\\Intel(R) Management Engine Components\\DAL;C:\\Users\\Pedro Luiz\\AppData\\Local\\Microsoft\\WindowsApps", "USERDOMAIN_ROAMINGPROFILE=LAPTOP-P5RCO9KR", "JUPYTER=jupyter", "HOMEPATH=\\Users\\Pedro Luiz", "PATHEXT=.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC", "SESSIONNAME=Console", "SYSTEMROOT=C:\\windows", "APPDATA=C:\\Users\\Pedro Luiz\\AppData\\Roaming", "PSMODULEPATH=%ProgramFiles%\\WindowsPowerShell\\Modules;C:\\windows\\system32\\WindowsPowerShell\\v1.0\\Modules", "COMMONPROGRAMW6432=C:\\Program Files\\Common Files", "PROGRAMDATA=C:\\ProgramData", "PUBLIC=C:\\Users\\Public", "OS=Windows_NT", "PROCESSOR_REVISION=8e0b", "TMP=C:\\Users\\PEDROL~1\\AppData\\Local\\Temp", "COMSPEC=C:\\windows\\system32\\cmd.exe", "ALLUSERSPROFILE=C:\\ProgramData", "COMPUTERNAME=LAPTOP-P5RCO9KR", "CONDARC=C:\\Users\\Pedro Luiz\\.julia\\conda\\3\\condarc-julia.yml", "ONEDRIVECONSUMER=C:\\Users\\Pedro Luiz\\OneDrive", "USERPROFILE=C:\\Users\\Pedro Luiz", "PROCESSOR_LEVEL=6", "=C:=C:\\Users\\Pedro Luiz\\AppData\\Local\\Julia-1.3.1", "PROGRAMW6432=C:\\Program Files", "TEMP=C:\\Users\\PEDROL~1\\AppData\\Local\\Temp", "HOMEDRIVE=C:", "PYTHONIOENCODING=UTF-8", "WINDIR=C:\\windows", "LOCALAPPDATA=C:\\Users\\Pedro Luiz\\AppData\\Local", "PROCESSOR_IDENTIFIER=Intel64 Family 6 Model 142 Stepping 11, GenuineIntel", "NUMBER_OF_PROCESSORS=8", "=::=::\\", "COMMONPROGRAMFILES(X86)=C:\\Program Files (x86)\\Common Files", "COMMONPROGRAMFILES=C:\\Program Files\\Common Files", "ONEDRIVE=C:\\Users\\Pedro Luiz\\OneDrive", "PROGRAMFILES(X86)=C:\\Program Files (x86)", "PROGRAMFILES=C:\\Program Files", "LOGONSERVER=\\\\LAPTOP-P5RCO9KR", "DRIVERDATA=C:\\Windows\\System32\\Drivers\\DriverData", "CONDA_PREFIX=C:\\Users\\Pedro Luiz\\.julia\\conda\\3", "FPS_BROWSER_USER_PROFILE_STRING=Default", "SYSTEMDRIVE=C:", "FPS_BROWSER_APP_PROFILE_STRING=Internet Explorer", "PROCESSOR_ARCHITECTURE=AMD64", "OPENBLAS_MAIN_FREE=1"])
Process(setenv(`'C:\Users\Pedro Luiz\.julia\conda\3\Scripts\jupyter.exe' notebook`,["PATH=C:\\Users\\Pedro Luiz\\.julia\\conda\\3\\Library\\bin;C:\\Users\\Pedro Luiz\\.julia\\conda\\3\\Scripts;C:\\windows\\system32;C:\\windows;C:\\windows\\System32\\Wbem;C:\\windows\\System32\\WindowsPowerShell\\v1.0\\;C:\\windows\\System32\\OpenSSH\\;C:\\Program Files (x86)\\NVIDIA Corporation\\PhysX\\Common;C:\\Program Files\\NVIDIA Corporation\\NVIDIA NvDLISR;C:\\Program Files (x86)\\Intel\\Intel(R) Management Engine Components\\DAL;C:\\Program Files\\Intel\\Intel(R) Management Engine Components\\DAL;C:\\Users\\Pedro Luiz\\AppData\\Local\\Microsoft\\WindowsApps", "USERDOMAIN_ROAMINGPROFILE=LAPTOP-P5RCO9KR", "JUPYTER=jupyter", "HOMEPATH=\\Users\\Pedro Luiz", "PATHEXT=.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC", "SESSIONNAME=Console", "SYSTEMROOT=C:\\windows", "APPDATA=C:\\Users\\Pedro Luiz\\AppData\\Roaming", "PSMODULEPATH=%ProgramFiles%\\WindowsPowerShell\\Modules;C:\\windows\\system32\\WindowsPowerShell\\v1.0\\Modules", "COMMONPROGRAMW6432=C:\\Program Files\\Common Files"  …  "PROGRAMFILES(X86)=C:\\Program Files (x86)", "PROGRAMFILES=C:\\Program Files", "LOGONSERVER=\\\\LAPTOP-P5RCO9KR", "DRIVERDATA=C:\\Windows\\System32\\Drivers\\DriverData", "CONDA_PREFIX=C:\\Users\\Pedro Luiz\\.julia\\conda\\3", "FPS_BROWSER_USER_PROFILE_STRING=Default", "SYSTEMDRIVE=C:", "FPS_BROWSER_APP_PROFILE_STRING=Internet Explorer", "PROCESSOR_ARCHITECTURE=AMD64", "OPENBLAS_MAIN_FREE=1"]; dir="C:\\Users\\Pedro Luiz"), ProcessExited(1))

julia> using Pkg

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

julia> ENV["JUPYTER"]=""
""

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

[oheil]

The problem could be, that your username contains a space (" Pedro Luiz").
To check could you try the following:

• Open a CMD window
• create a Folder e.g. C:\Temp and write at the command prompt:
  SET JULIA_DEPOT_PATH=C:\Temp
• Start Julia from the same command prompt, it is probably:
  "C:\Users\Pedro Luiz\AppData\Local\Julia-1.3.1\bin\julia.exe"
  (check your version!)
• Now try again to install and use IJulia (type ] at the julia prompt) to enter Pkg REPL and enter add IJulia
(v1.3) pkg> add IJulia
  It should install everything in C:\Temp and hopefully without any problems.

To do something similar permanently you should set the environment variable JULIA_DEPOT_PATH at the appropriate windows dialog (check google for “setting environment variable in windows”)

[oheil]

Maybe related:

Trouble with IJulia after upgrade to 1.3.1

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-fcdaad…

So my suggestion may work but it may be not because if the space in the user name. It may work just because of the forced reinstallation.

[stevengj]

I observed a similar problem recently, apparently due to a conflict between the Jupyter (actually Tornado IIRC) and Python versions on Windows in the latest Anaconda (Tornado’s code was using an asyncio feature from Python 3.8). Separately, there was a Windows path problem in IJulia’s notebook() function that was fixed over the weekend.

Try the following things:

1. Just do pkg> update, restart Julia, and try again with IJulia.notebook().

2. Do pkg> add Conda and then julia> import Conda; Conda.update(), and try again with IJulia.notebook(), in hopes that Anaconda has fixed this problem.

3. Do julia> import Conda; Conda.add("python=3.8"), and try again with IJulia.notebook(). This fixed the problem for me last night.

Update: should be fixed by unpin Anaconda on Windows by stevengj · Pull Request #170 · JuliaPy/Conda.jl · GitHub once this is merged and tagged. The problem was that Conda.jl was pinning Python at 3.6 to fix an issue a couple of years ago, and we forgot to unpin it.