When I attempt to upgrade from the App Store I get a message that says 'the app is damaged and can't be used'? Has anyone else had this issue and is there an alternative to upgrade?
MacBook Air 13", OS X 10.10
If it doesn't say "Download" in the AppStore, go to your Applications folder and check for "Install Mac OS High Sierra". If it is there, delete it. Then restart your Mac and try again.
What version MacBook Air do you have?
http://www.macmaps.com/docs/DOC-13695/
Make sure it is listed among the 10.13 compatible.
How much free disk space do you have?
Hi 'a brody'. Thanks for your help on this.
I'm so sorry to hear that. Not the response I anticipated.
Quite so.
Hi macjack. I failed to thank you for your help on this. Thanks to your tip I managed to get the software installed.
Sadly our mj has passed away. :(
Upgrading to High Sierra 10.13.6
