Windows 10, external hard drive lockout?

So I have an external hard drive, which I have never set up a username or password for so I can access it from any computer I want. So far I have been able to, but recently it has decided that I need admin permission to access anything. I cannot get into the files or change anything in properties and security, as I... show more So I have an external hard drive, which I have never set up a username or password for so I can access it from any computer I want. So far I have been able to, but recently it has decided that I need admin permission to access anything. I cannot get into the files or change anything in properties and security, as I need admin permission for that as well. I'm using Windows 10 right now (a library computer), and again have never set up an admin username or password. Any ideas as to how to get access again?
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