Hi all.
Has been started a few days ago. First couldn't open my Mail app...next day want to open a picture with preview app, after I decided to upgrade for Yosemite but
can't open the App Store app. Also many time drop off the internet connection.
I have iMac 27" 2011(mid) with Mavericks.
Anybody knows something about this problem?
Thanks
All the best Giraffe
iMac, OS X Mavericks (10.9.5)
Try a restart.
Do a backup, using either Time Machine or a cloning program, to ensure files/data can be recovered. Two backups are better than one.
Try setting up another admin user account to see if the same problem continues. If Back-to-My Mac is selected in System Preferences, the Guest account will not work. The intent is to see if it is specific to one account or a system wide problem. This account can be deleted later.
Isolating an issue by using another user account
If the problem is still there, try booting into the Safe Mode using your normal account. Disconnect all peripherals except those needed for the test. Shut down the computer and then power it back up after waiting 10 seconds. Immediately after hearing the startup chime, hold down the shift key and continue to hold it until the gray Apple icon and a progress bar appear. The boot up is significantly slower than normal. This will reset some caches, forces a directory check, and disables all startup and login items, among other things. When you reboot normally, the initial reboot may be slower than normal. If the system operates normally, there may be 3rd party applications which are causing a problem. Try deleting/disabling the third party applications after a restart by using the application un-installer. For each disable/delete, you will need to restart if you don't do them all at once.
Safe Mode - Mavericks also Yosemite
I've got the same issue, and none of the solutions above worked for me.
If you had the same problem in a test account and the Safe Mode, try reinstalling the OS.
Do a backup, preferable 2 separate ones on 2 drives. Boot to the Recovery Volume (command - R on a restart or hold down the option/alt key during a restart and select Recovery Volume). Run Disk Utility Verify/Repair and Repair Permissions until you get no errors. Then re-install the OS.
I've tried that as well, but once it should begin reinstalling it says 'the product is temporarily not available'.
Boot normally.
Try resetting the App Store and Clearing Cookies.
If the App Store will open, Purchases tab and download Mavericks.
You can make a bootable USB stick to install using this free program which will do all the work for you.
My terminal isn't working either. Most of the base mac programs don't work! App Store, Preview, Calendar, Contacts, Messages, Facetime etc...
I click on them to open, the icon just bounces once or twice and then it stops. Nothing happens!
App Store app, preview....I can't open them...??
