As former windows Dev, I remember getting supper frustrated with their Windows upgrade. You could no longer reliably write to your install folder. They started

As former windows Dev, I remember getting supper frustrated with their Windows upgrade. You could no longer reliably write to your install folder. They started forcing you to write to the registry, then to data folder, then other places. So you had to split up the install "ten ways" how and where you kept your data. HKEY local machine, HKEY_Current_User, and so on .. then ask for elevation to install. I vaguely remember debugging a bug where I would delete a file in my install folder. But then found out windows was restoring an older version of it in the background. c:\program files was virtualized, and not really a directory anymore.