I will click featured or something else and it automatically redirects me to updates.
What sequence of things can I try to unstick this or reset the application so I can browse the features and other sections of the Mac App Store?
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You can solve this problem by omitting the AppStore and installing all system updates through the terminal.
Open Terminal and type:
sudo softwareupdate -l
sudo softwareupdate -i -a
This update fixes the app and returns proper function.