10.11.6 OS update.  Now get the message "Cannot open the App Store app" 'application Notes can not be opened. "  Similarly for the calendar, Mail and others.  That is what it is?  Need a fix.

Hah!

Had the problem after upgrade to OS 10.11.6. Many applications open. "cannot open application Notes.

After McAfee Internet Security setting. Disable the effective Protection has allowed the Apple software to open. After turning on the return, applications, always open normally.  Thanks gang!

As a suggestion, I would UNINSTALL the McAfee software at the same time. Things are unnecessary and cause problems on many systems.

Barry

Tags: Mac OS & System Software

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