· In System Preferences, click Security & Privacy, then click General. Click the lock and enter your password to make changes. Select App Store under the header “Allow apps downloaded from.” Open a developer-signed or notarized appEstimated Reading Time: 5 mins. · Boot in safe mode* and log in to the account with the problem. The instructions provided by Apple are as follows: Be sure your Mac is shut down. Press the power button. Immediately after you hear the startup tone, hold the Shift key. The Shift key should be held as soon as possible after the startup tone, but not before the tone. If you can’t open an app on Mac. You may not have the privileges to open the app, the app may be damaged, or it may not be installed. If you aren’t an administrator of your Mac, the administrator may be preventing you from using the app. Contact the administrator of your Mac. You may be trying to open an app that is not registered with Apple by an identified developer.
Open a new Finder Window. Navigate to the Download or Application you just installed on your Mac. Instead of Double-Clicking on the Icon to open, Right Click on it and choose "Open". A Pop-Up Window will appear telling you that the Software is from an Unidentified Developer, but it will give you the option to Open it anyway. One of the best things about a Mac is the range of free apps that come pre-installed. However, that doesn't mean you won't download and install other applications from time to time. It should be easy — like most Apple tasks — but that isn't always the case. This post explains what you can do if your Mac won't install apps. Open your Mac's System Preferences. On the bottom left, you'll see a padlock icon. Click on it and enter your admin password. Under "Allow apps to be downloaded from", select App Store and identified developers. Once this is done, you'll be able to open most of the apps that aren't on the App Store.
My iPhone 12 pro Max worked fine, but recently I got a 13 pro max. I have two showstopping issues: 1. If I try to download an app from the app store it just spins forever and never doenloads. 2. Some apps like Tesla, Google Music, Youtube stay on their splash screens forever, and just crash after about 1 minute. Common error messages when installing Mac apps. When trying to download or update apps, you might get one of the following messages: “App can’t be opened because it is not from the App Store.”. “App failed to download. Use the Purchases page to try again.”. “The application could not be downloaded. Find the “Saved Application State” folder for the app which will not open. You will find it inside the app’s “Container” folder (above) → Data → Library → Saved Application State Inside that folder will be one more, which ends with “.savedState” and contains the information used to restore the windows which were open when you quit the app.
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