What does Pluto look like on Microsoft?

On Microsoft it is the design shipped in Windows 10 Anniversary Update, shown above at full size. Older revisions are listed beneath it.

When did Microsoft add Pluto?

Microsoft first drew Pluto in Windows 8.0, released October 26, 2012.

Microsoft Corporation has shipped 4 versions of Pluto. Each is dated, so you can see when the design changed.

Microsoft Windows 8.0

Microsoft shipped a new design for Pluto in Windows 8.0, released October 26, 2012. The previous design is shown beside it.

The first Microsoft release we hold for this emoji.

✳ marks a release that redrew this emoji. The rest re-shipped the design unchanged.

What does Pluto look like on Microsoft?: On Microsoft it is the design shipped in Windows 10 Anniversary Update, shown above at full size. Older revisions are listed beneath it.
When did Microsoft add Pluto?: Microsoft first drew Pluto in Windows 8.0, released October 26, 2012.
How many times has Microsoft redrawn Pluto?: Microsoft Corporation has shipped 4 versions of Pluto. Each is dated, so you can see when the design changed.