AppData Local LocalLow Roaming

https://blog.codinghorror.com/was-the-windows-registry-a-good-idea/

Says how the Windows Registry was kind of a bad idea because everyone store their junk there.
Don't use the Registry, use the modern "ini file" reborn:

<quote>

There is an alternative, though. If Windows applications weren't so busy mindlessly piling all their settings on the registry garbage dump with everyone else, they could elect to follow the new, much saner Windows Vista conventions for storing application-specific data:

/Users/Jeff/AppData/Local
/Users/Jeff/AppData/LocalLow
/Users/Jeff/AppData/Roaming

Local and LocalLow are for bits of application data that are truly machine-specific. Roaming is for non-machine specific settings that will follow the user. That's where the lion's share of the application settings will be. It's all explained in the Roaming User Data Deployment Guide (Word doc). However, these are still user-specific settings, obviously, as they're under the /Users folder. I can't find any new Windows filesystem convention for system level, non-user-specific settings. I suppose that's still Ye Olde Registry by default.

It is possible to write Windows applications that don't use the registry in any way. These are some of my favorite applications. But they're also the most rare and precious of all applications in the Windows software ecosystem.

</quote>

Link to Roaming User Data Deployment Guide:

https://technet.microsoft.com/en-us/library/cc766489(v=ws.10).aspx