I have updated bridge and photoshop to the latest version. when I view a photo in bridge an double click bridge opens phothshop old version
Bridge is updated to latest version as well as Photoshop is updated to 2019 version. When I try to open photo displayed in bridge, it will open in 2018 version of Photoshop, not 2019 that is my current updated version. How do you change preferences in Bridge to open latest version of photoshop.

Launch Bridge → Preferences→ File Type Associations → select the asset type and choose the default program you would like to associate.
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Chris Page commented
same thing happening for 2019 to 2020 i think
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Please let us know if you are still facing any problems with this or any other workflow
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Gethin commented
"resolved for the user".. Adobe treats us like shit. I'm sick of it. You expect us to manually update our file associations??? Pathetic