Apple MacBook Pro will not do updates
Three things to try - report back &amp; we can tweak this answer.


Try Launching App Store directly from the Applications folder, rather than via About this Mac.
Clean out the App Store prefs &amp; caches...
Open Terminal &amp; copy/paste each of these 3 lines, hitting Enter after each
rm ~/Library/Preferences/com.apple.appstore.plist
rm ~/Library/Preferences/com.apple.storeagent.plist
rm ~/Library/Cookies/com.apple.appstore.plist
and again for the caches
rm -r ~/Library/Caches/com.apple.appstore
rm -r ~/Library/Caches/com.apple.storeagent  
Make a new admin account...
System Prefs > Users &amp; Groups
Unlock the prefs, if locked, &amp; click the plus button at the bottom.
Set up a new Admin [not Standard] account, then try logging yourself out &amp; into that account instead.
Test method 1.