USB Drive is write-protected...

First thing and foremost, does USB Drive have write protection similar to floppy disk-drive? Of course not...

The following symptoms that the USB Drive is write-protected:

1. No delete option on classic context menu.

2. When you try to format it, it shows an error that is write protected:

What does it mean to us as users? How come it is write protected?

Well, there's only one possibility: The drive can not accept more storage or command. It already reached its limits (errors, data transfer). It's now useless as it is expired. Btw, my USB drive is already 20yrs+