IIRC - It can be solved from the command line. My memory is fuzzy though. I had this issue a while back.
Folks, I already had several solutions when I posted the question
I had put some time into finding the answer to a very rare problem. All the answers posted work quite well but I don't want to make a project of deleting a file
I want to hit delete and press on with the business at hand............. and, on several occasions lately that didn't work.
No big deal
I've had a copy of "Move on Boot" on every machine for many years so I fire up the utility, designate the bastard file, reboot the machine, and the file has disappeared as was advertised. Problem solved
.............. except I just wasted 20 mins deleting a file
The second time I got that error msg I decided it was time to find out why I was getting it
I checked the includes folder and discovered a half dozen files stretching to the edge of the screen and a scroll bar at the bottom of the screen. Files are 350/450 characters long, just characters, no complete words, and no file extension... weird
They wouldn't delete, rename, shorten, or copy to the clipboard. I couldn't move them to the root folder to get a shorter path. They just set there pissing me off
Then, I started clicking "about", hoping for an epiphany
I right clicked on the Menu Bar in the ribbon, the file was already highlighted, and I get a dropdown. Click the option "Delete File History", try to delete the file again, and Voila', it goes
I tried a couple more of the long files with the same result. What has File History got to do with the problem
I don't know but maybe someone at DC does
I post the question..... get lots of ideas and methods to remove the naughty files, but I still don't know why deleting file history worked unless the file history is tacked onto the file somehow
Since then I've been checking more of the "includes folders" for more over-long files and trying to figure what to do with them.
The files are easy to find once you start paying attention
Open a folder and if it contains extra long files a scroll bar appears at the bottom of the page
Found some more files and started playing. Deleting the history worked! Then I found one with .eml in the file.......... an email header? Locked solid... so I checked the Properties and discovered that everyone could see it but nobody had full powers to do anything with it. I edited the Permissions giving everyone "full powers" and Bingo......... that one deleted with the mouse
Found more files running off the edge of the screen and one of these had the word adlink in the file name. JUNK files
Removed them all using one of the procedures outlined above..... in 10 seconds, and never leaving the page
Long story shorter............ try the above procedures if the problem arises. It really isn't necessary to run off into Geekdom to rid yourself of those damned too-long files