Too many posts were made to a semaphore

As poetic as this error message appears to be, it means absolutely nothing to any of us.

This appeared while trying to change the attributes of an ordinary file on my Windows 10 machine. The file is my own work; not a system file.

Yes all the files I have are unhidden.

Yes, I have to continually redo the unsetting of "read only" on my files. These are the burdens of being a Windows user, which is set to, of course, interfere as much as possible with the user. Hey, it's Microsoft.

So what is the meaning, if you can tell , of this error message: "Too many posts were made to a semaphore."

Out here on planet Earth, a semaphore is a signal, like a traffic or warning light in the physical world. Posts are the poles on which the semaphore sits to bring it above ground enough so that people can see it. Sometimes posts are made in the sense of a message. But neither of these meanings apply here.

As always, there are lots of websites telling you to boot up in Safe Mode and bring your entire 2 terabyte hard drive back to its virgin form with all of your data and years of work gone. I prefer not to do that, thank you, to find out why applying attributes to a file entails "too many posts" being made to "a semaphore."

Thank you for your help, if you can.