I have a USB drive connected to my modem/router. One group of files, which I want to delete, only has access permissions of "Read and execute" and "Read". All my attempts to gain Full Control of this group have been denied in one way or another. In particular, an attempt to Change Owner results in:
"The program cannot open the required dialog box because it cannot determine whether the computer named 10.1.1.1 is joined to a domain. Close this message and try again."
I have tried other ways to change permissions, all of which result in an 'Access denied' message.
The files in question are all components of a manual (.gif, .html, etc) and I have no idea why only this group of files ended up with such restricted access permissions when all the other files on the drive appear to have Full Control access. I'm almost at the point of backing up the drive and re-formatting it but would like to know if there is a simple solution. Thanks in advance.
OS is 64bit Win10 Home.