You have to modify the permissions to grant your users account access.
For example, on this folder, only Administrators and the System account have access. While your account may be a member of the Administrators group, UAC would still need you to elevate permissions to "Run as administrator".
Grant the user account like Testuser here, or a group like Users access so that you don't need UAC elevation.
More info here: https://www.bing.com/search?q=how+ntfs+permissions+work