Q: Yosemite invisible windows
Since I have upgraded to Yosemite, I've been experiencing problems with the windows. Sometimes, they become transparent or even entirely invisible, I can see the borders when I pass over them with the mouse on mission control and I can perform actions as if they were fully functional, I just can't see them. How can I solve this? It happens with every window open at the moment, but it doesn't affect the ones that I open after.
The image shows how the window become sometimes, other times it's completely invisible.
MacBook Pro, OS X Yosemite (10.10.1)
Posted on Dec 3, 2014 12:10 PM
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
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 and again when you log in. 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.
Posted on Dec 3, 2014 12:26 PM


