View in Mac App Store button does nothing
In Chrome, go to Settings > Show advanced settings... > Privacy > Content settings... > Handlers > Manage handlers... and a window will pop up showing active and ignored protocol handlers. The macappstores protocol handler should be in the "ignored" list. Hover over it and click the X to delete it.



An alternative: try downloading and installing RCDefaultApp – it's a preference pane that lets you adjust protocol handlers, default apps for certain file types, etc. Once installed, go to System Preferences > Default Apps > Apps and you should see "App Store" in the list. Select that and make sure that all of the checkboxes in there (for macappstore, macappstores, etc.) are checked.