In a recent update, it had listed Paint as a feature that would be either removed or no longer developed.
Paint, renowned for its simplicity, has been part of the Windows operating system since its launch in 1985.
Microsoft suggested it would not remain on Windows 10 by default but did say it would be available for free on the Windows Store.
Its successor, Paint 3D, will be part of the Windows 10 package.
There had been an outpouring of support for the program on social media, following the publication of the list on 24 July.
