The style of this XP-tan model looks very similar to the model style used in the papercrafts of ME-tan and 2k-tan. (post #1881 and posts #1882 and #1883). The CE-tan papercraft I think if fanmade but it is also the same model type (post #1884).
It makes me wonder, could XP-tan papercraft exist? Did any XP-tan papercraft exist? Or it is just a condience and this model and those models used for the papercrafts are just very similar but are not related to each other?
The person who post this on Twitter said they made this model a long while ago according to translator, so it could be possible that that person was the person who created the ME-tan and 2k-tan papercrafts.
I also know here's a gif featuring this XP-tan model along with 2k-tan and ME-tan. I'll upload that too.
I think I will probably try to find info about the papercrafts I uploaded and try to find if XP-tan papercraft existed.