Unable to connect to Admin$ shares with local accounts

When trying to access the admin shares on my systems, after removing them from the domain, I found that only the local administrator account was able to access them. It seems this is by design and you need to turn off Remote UAC from the registry.

Here is the article: https://support.microsoft.com/en-us/help/951016/description-of-user-account-control-and-remote-restrictions-in-windows