Hi,
I'ts just a particular problem of mine or it is "Photos" from windows 10 actually NOT color managed? I did some checks and "Photos" is rendering in my computer all pictures as they would have the AdobeRBG profile, even if they have any other. That results in oversaturated pictures with sRGB profile and dull for those with ProPhoto profile.
I switched the default previewer to the more classic windows "Photo Gallery". In that case all three profiles are taken correctly into account. I would welcome a move from sRGB to AdobeRGB, but I rather prefer that the software is able to interpret all possible profiles. My usual choice for personal work is AdobeRGB or ProPhoto, but for sharing with friends and familly I'm more confident with sRGB.
best,
Santiago