I have installed and uninstalled this software about 7 times. Each time it lasted different amounts of time before it 'broke' itself and I was no longer able to open it. I have not found any solutions ANYWHERE that fixes the problem --- which, for me, was, Navigator would no longer open, no matter what, and no amount of trying this and that has helped. In fact, I just today finished cleaning my HD of almost all traces of it from my win 10 system.
I don't want to be discouraging, but this is a problem that seems to just be ignored and never addressed. If it has I've not seen it. I've been struggling with it for more than a year. I've read everything and anything, and only once did something work, and I don't know what it was that 'fixed' it, but I had taken notes, and repeated it the next time, and the 'fix' did nothing.
Pretty sad that a large, popular piece of software is so fragile and buggy to where you can't use it. I tried to install something else to use in place of Navigator, but it was buggy as well (WinPython). I just deleted all traces of that today too.
I'm not sure what to suggest to you, but maybe you will find a fix.....hope you do. I'm not sure what I can do for myself at this point. The documentation is circular and poorly done, and hard to follow, imo. I really only want PyCharm, Spyder and Jupyter Notebooks, but finding them in a single, bug-free package just isn't possible it seems.
I wish you the best and hope you get this fixed and don't have the issues I've had. :thumbs-up: