App Store has been failing since upgraded to High Sierra
After updating to macOS High Sierra, App Store has been failing to perform some updates on iMac 27 inch (late 2012) with two successive error messages below.
I have MacBook 12 inch (2015) and App Store is working properly on macOS High Sierra. So it doesn't seem to be a problem in my iTunes account.
Even after failure for some updates, macOS update ran successfully. So it seems the porblem is dependent on Apps.
I have tried Command (⌘), Option, P, and R but didn't help.
Can anyone suggest any solution, please?
Failed
Numbers, Keynote, and Pages on Nov 9, 2017
Xcode on Dec 4, 2017
Third party apps
Successful
macOS 10.13.2 Update on Dec 8, 2017
iTunes on 7 Dec, 2017
Security Update 2017-001 on Nov 30, 2017
iMac, macOS High Sierra (10.13.1), null