Windows 1.00

Not to be confused with Premiere Edition.

Windows 1.00 would be the name of an unconfirmed build of Windows 1.x. There is no known build with a clean "Windows 1.00" as all the retail builds that shipped had a minor version number.

Fake Screenshots/Builds
Fake builds with this version number have been appearing up to Namronia's find of an edited magazine picture with the Premiere Edition boot screen on Microsoft's FTP.