Windows NT 3.5 build 807 (Korean Beta)

Windows NT 3.5 build 807.1 (Korean Beta) is a Korean language build of Windows NT 3.5. It includes some Korean language applications, installs the Korean language pack, and has some changes in the setup.

Like in the Japanese-language version of Windows NT 3.5 build 756.1, there's an early concept of a timebomb in this build, where the boot message will change to a message to ask the user to obtain a retail copy of Windows NT 3.5. Despite that, the build is still usable.