Anaconda: An unexpected error ocurred on Navigator start-up

I follow the suggestions: https://github.com/ContinuumIO/anaconda-issues/issues/6006 , https://github.com/ContinuumIO/anaconda-issues/issues/1984

These commands helped me:

conda update anaconda-navigator
conda update navigator-updater
anaconda-navigator --reset

Facing the same error initially, I tried other solutions given here by executing the commands in anaconda terminal but nothing works in my case as I was getting the following error on executing command

Load Error: invalid yaml at position 0

This means .condarc file is either corrupted due to some reason or there may be some changes in it. The solution that worked for me is to delete .condarc. As the .condarc configuration file follows simple YAML syntax. .condarc is automatically created in your home directory the time you run anaconda navigator.

Conda will re-create it, again.

Hope it Helps!!

Try removing .condarc from your directory and check if it works. I had the same issue and it worked for me. I hope it works for you.