Unity won't accept Android SDK Location

I’m trying to set up my Unity for VR Development and trying to right now setup the Android SDK following Unity’s online guide. I have installed the SDK (platform-28), as well as the platform tools, build tools and USB Driver via the command line tool and it downloaded the folders.

This is the content of the android-28 folder.

Now I am trying to set that location in the “Preferences → External Tools” Window inside of Unity, but whenever I browse to the “android-28”-folder, Unity tells me that it can’t find a SDK at that location. I am on Windows and Unity 2018.3.9f1.

It found the folder after I reinstalled the SDK in C:\Program Files\Android_SDK instead of C:\Android_SDK… Thanks Windows I guess.