Outlook Signature File Location Windows 10

I recently bought a new computer with Windows 10 installed. I have a custom html email signature that I need to add to outlook mail, however the file location is not the same as windows 7. Where can I find this file so that I can add my custom html signature?

I've tried the following locations with no luck

Windows 8

drive:\Users<username>\AppData\Local\Microsoft\Outlook

or

drive:\Users<username>\Roaming\Local\Microsoft\Outlook

Windows 7 / Windows Vista

drive:\Users<username>\Documents\Outlook Files

Windows XP

drive:\Users<username>\My Documents\Outlook Files

If you had created data files on your computer in previous versions of Outlook, they'll be stored in the following default locations, depending on your operating system:

Windows 8 / Windows 7 / Windows Vista

drive:\Users<username>\AppData\Local\Microsoft\Outlook

Windows XP