How to find out which folders/files are no longer available due to 255 character length Windows?

Question

Windows

I have a huge pile of files, 11000 folders of different nesting levels, but bad people made some folders with very long names and now everything that lies in them or under the folders has become inaccessible,
how can I now find all these long names exactly to know where need to rename/shorten/fix?
It will take more than one week to look through 11,000 folders with your hands

Answer 1

C \\?\c:\длинное_имяwill have access.

Answer 2

googled this. but didn't check https://github.com/deadlydog/PathLengthChecker