Apple's Preview App got somehow stuck in a .pdf form from a law firm. [El Capitan]
Since then it is either the unending spinning beach ball of death or force quit.
How do I re-install Preview?
MacBook Pro (15-inch Early 2011), macOS Sierra (10.12.4), Preview
Have you tried holding the shift key down while launching Preview after a force-quit?
Have you tried holding the shift key down while launching Preview after a force-quit?
Preview is part of the OS, so you'd have to use recovery to reinstall the entire OS - it will not erase your files; however, it is always best to have a backup first.
Can you check two things: open Activity Monitor (in Applications > Utilities) and if Preview is running, kill the process. And, go to your user library > Preferences and find these:
com.apple.Preview.LSSharedFileList.plist
com.apple.Preview.plist
com.apple.Preview.SandboxedPersistentURLs.LSSharedFileList.plist
Move them to the trash (do not empty yet). Restart Mac and see if the problem persists. The prefs files will be regenerating themselves. If something does not, simply move them back from the trash.
How do I re-install Preview?
