Dock missing after Catalina upgrade to 10.15.6
Missing Dock and background picture (black screen) after logging on. Message: Dock quitted unexpectedly when using Dock additional program. Is there any way to solve this?
iMac 27″ 5K, macOS 10.15
Try doing a Dock restart using the following Terminal command:
killall Dock
Log out/in and test. If that doesn’t work, you need to look in your user Library/Applications Support/Dock for the .db. Use the Finder “Go To Folder” command. Enter ~/Library/Applications Support/Dock. Move the .db to your desktop.
Then try a dock reset.
Applications/Utilities/Terminal enter the command
killall Dock
Log out/in test. If it works okay, delete the .db from the desktop.
If the Dock is the same, return the .db to where you got them from, overwriting the newer ones.
Some people also had it working doing the following:
In System Preferences → Displays → Arrangement tab, you have to drag and drop the exact white bar which represents the dock (not the blue screen) anywhere on the monitor and leave. Then optionally drag it back to wherever you want.