mac-appstoremacosmojave
I just download the Mojave from mac app store and after success download the Installation file disappear from Application folder and Launchpad!
I do twice download it and same happened. its not like a small file to download it, its 6 GB and I can't understand why this happens.
How can I figure out what's deleting this or get a good download?
Try resetting the Mac App Store.
Enable the debug menu and restart the Mac App Store.
defaults write com.apple.appstore ShowDebugMenu -bool true
Choose the Reset Application option.
Well as it usually goes I figured it out shortly after posting. I previously hid it from my purchases and going into my account settings (Store > View My Account) and un-hiding it did the trick.
Best Answer
The download performs a check to be sure the package is complete and not tampered with. I wonder if that's deleting what it thinks is a bad download and some bug or system modification is stopping you from getting the typical user alert telling you that the download is being deleted without the option to save it.
First steps, check the console app and look at
/var/log/install.logIf there's no helpful item - you could always get with Apple support to troubleshoot. I often look at other logs like system.log but there can be thousands of entries so if you are looking at all the machine logs for the first time, it might be painful to search for or see the item that's relevant.
If you're game, these are the sorts of files and locations you'll move to if your App Store itself is broken and it's not a server side issue with the account or just a bad network where you can't get a reliable download of that large a size. I've had overseas networks where they mess with SSL certificates or just corrupt the data horribly that cause this.