Windows 10 Request advice in fixing a security error.

[wilspeak]

Hello Everyone,
I tried to follow the instructions of this guide >> (How to Get Access to WindowsApps Folder in Windows 10: >> How to Get Access to WindowsApps Folder in Windows 10 )
I went through all the steps, but when I got to (step #9 ) where it says "open the “Select User or Group window and enter your administrator username and click on the button Check Names" .This action will automatically fill in the object name. Well that does not happen for me I keep getting a "An object (user, group, or built in security principal) with the following name>>MY NAME<< can not be found" error. Can anyone help me with this security

 

[Ryujingt3]

Can you please link to the respective article? That way we can understand better what you are asking.