Cannot open anaconda suddenly

Question

Today I found I cannot open anaconda navigator, which operated just fine before. At the same time, spyder could not be open either, but jupyter notebook and

Answer 1

I just had a similar problem with Navigator. I typed anaconda-navigator on the command line and it opened fine. This doesn't explain why it won't open from the icon but does offer a work-around.

Answer 2

Uninstalled PyQt5

pip uninstall PyQt5

and installed qtpy

pip install qtpy

worked for me