Current user only: ADB and Fastboot are installed to %UserProfile%\adb directory, and added path for current user.
CMD can use ADB and Fastboot from any directory.
Drivers are installed to system - no need to install them from directories.
Installer automaticly decides if install 32-bit or 64-bit drivers.
If anybody got problem with detecting device,
If installation fails, then post here contents of "adb-installer.log" from desktop. (if there is any)
If you have problem with driver enumeration in Windows 8.1 install update KB2917929
If you have older Google USB Driver installed, please uninstall it from Control Panel before installing new
If you have previously installed it as system-wide and now you want it current user only (or vice-versa), it won't remove it, you must do it yourself. (at least for now)
Download ADB and Fastboot mediafire