Not working with Spyder 4.1.5 (via Anaconda3-2020.11)

[boardtc]

Not working with Spyder 4.1.5 (via Anaconda3-2020.11)

What steps will reproduce the problem?

1. Install Anaconda3-2020.11-Windows-x86_64.exe
2. Open command prompt and type: conda install spyder-notebook -c spyder-ide
3. Open Spyder and then open a .ipynb
4. It just shows as if spyder-notebook was not installed, just a json file

Versions and main components

• Spyder Version: 4.1.5
• Python Version: 3.7.3
• Operating system: Windows 10

Dependencies

Optional:

cython >=0.21 : 0.29.21 (OK) matplotlib >=2.0.0 : 3.3.2 (OK) numpy >=1.7 : 1.19.2 (OK) pandas >=0.13.1 : 1.1.3 (OK) scipy >=0.17.0 : 1.5.2 (OK) sympy >=0.7.3 : 1.6.2 (OK)

Spyder plugins:

spyder_notebook : 0.3.2 (OK) spyder_unittest : 0.4.1 (OK)

[salmanea]

Same here. Not working with Spyder 5

[mmagnuski]

related: #362, #360

[ccordoba12]

Right, closing as a duplicate of those issues.