could that the filename length is too long.
"Cloud storage systems have limits on file name length and total path length which rclone is more likely to breach using "Standard" file name encryption. Where file names are less thn 156 characters in length issues should not be encountered, irrespective of cloud storage provider."
was evidently the issue. shortening up the file name solved it. i was thrown off because with cloud remotes, especially onedrive, they returned "maximum file path length exceeded" or something. I thank you.
It is because individual elements of the path are still limited to 255 characters. The whole path itself can be arbitrarily long but the individual elements (file names and directory names) can't be over 255 chars.
Windows doesn't come up with a very descriptive error when you exceed the limit...
yes shortening the file name made the error go away. generally rclone has been very stable with windows-to-windows and windows-to-cloud transfers. the only issue we've had is windows-to-truenas, but that's not an rclone issue as the windows copy/paste generates the same "unexpected network error" as rclone does. if any of y'all have a way of getting more details out of windows/rclone for that error, feel free to fill me in.