Windows 10: File permission denied

I am having a problem opening a Microsoft Access database accdb file on my D: drive. It was working fine until recently when I upgraded to Windows10/Office 2016. Now all I get is : "File permission denied".
Bizarrely all the other Access databases in the same folder are completely accessible - apart from this single one.

I have tried changing the security permissions, changing ownership, logging on as Administrator - nothing seems to work.

The only thing I can think of is that on Windows 7 my user account was just "Nick" and now on Windows 10 it is "Nick B" with an email address associated with it.

Any help would be greatly appreciated

Thanks

Nick

:)

 

File Permission denied

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File Permission denied

I have an mp4 file that i accessed regularly. But today i tried to open it, and it gives me an error message saying that i need to provide administrator password to continue, so i thought 'ok no big deal im administrator so ill just enter the password and
get it over with' but when i pressed continue instead of giving me the option to enter the password it said i do not have permission to access my file and im thinking what the heck?? I, the ADMINISTRATOR do not have permission to view MY own file????