Windows 10 The requested security information is either unavailable or can't be displayed

Thank you Neemobeer. I assume that id sone from the cmd line, but I don't know what an elevated command prompt is or the exact form of the command. Can you provide me with more detail? Thank you.

Opening an Elevated Application

takeown /f C:\path\to\file /A

or

takeown /f C:\path\to\directory /A /R if you want to recursively take ownership of a entire directory and everything in it

icacls C:\path\to\file /grant administrators:F

or

icacls C:\path\to\directory /grant administrators:F /T to set access recursively to a directory

These are folders that have the permissions missing, not files. The folders are in an external drive. The drive is the L drive which is named "Older Photos - Lacie 1". The main folder named "2014 photos". The first folder with the missing permission is a subfolder and is named "5D Mark IV". (There are other subfolders with missing permissions, but they all have similar folder structures.}

So just to be sure,
- I open the command prompt by hitting Windows R, then typing cmd in the run box and clicking OK
- Then in the black box that comes up, after the C:\Users\(my user name)> I'll type takeown /f Older Photos - Lacie 1 (L/2014 Photos/5D Mark IV

Is that all correct?

I'd like to thank you for your help. I appreciate it.

No you need to open the command prompt with "Run As Administrator" as described in the link

Oh, sorry. I didn't realize that was a link. I now understand how to open the command prompt as an administrator. So, here's what I think I need to do:
- Type cmd in the search box. Right click on the cCommand Prompt App, and select Run as Administrator
- Click yes to allow the app to make changes to my device

- Then in the black box that comes up, after the C:\WINDOWS\system32> I'll type takeown /f Older Photos - Lacie 1 (L/2014 Photos/5D Mark IV

Is that all correct?