xpmgr
Command line interface for Windows XP license management, inspired by Microsoft's "slmgr".
Usage
--GetProductID: Gets the product ID (ex: 76477-755-3803223-21229).
--SetProductKey: Sets the product key (tested to work with dashes).
--GetInstallationID: Gets an Installation ID with no dashes (ex: 253286028742154311079061239762245184619981623171292574).
--SetConfirmationID: Sets a Confirmation ID (tested to work with dashes).
Make sure you do commands right, since, as of now, there's no checking to make sure it's correct or not!
Releases
https://github.com/UMSKT/xpmgr/releases
Building
Due to GitHub not wanting to cooperate with auto-building for Windows XP (who would have thought?), you need to build it yourself.
Make sure Visual Studio 2017 or later is installed, with the v141_xp toolchain. Then, git clone, open in VS, build, done.