Catalina dock problem

Try a Dock reset:

Launch Terminal and at the prompt copy & paste this command:

defaults delete com.apple.dock; killall Dock

Then press Return.

This will return the Dock to default and you'll need to set it up the way you like it again.

This is a persistent bug in Catalina. I've found that after I restart, the dock still does not function properly. Opening a terminal and issuing a "killall Dock" fixes it. The deletion of defaults doesn't seem to be necessary (and it forces you to rebuild the applications on the dock each time). Thanks for the suggestion!

found an issue with some start up applications in error, zoom to be specific. I removed these start up items, restarted and everything now works.

I fixed by going to Activity Monitor > search for “Dock” and force quit the option with a black icon. Then I went to System Preferences and adjusted the settings.

Hope it helps!

https://discussions.apple.com/thread/250718639?answerId=251550079022#251550079022

Hello,

I have the same probleme so i do a script in startup

Launch script editor, type :

tell application "Terminal"

activate

do script "killall Dock"

delay 3

quit

end tell

save as an application, and add this at the opening of the session

Everything is OK for me while waiting a Catalina patch...

Hello,

changing the system preferences (inactivating the automated disappearing and reappearing of the dock) and a restart and again a change in these settings finally helped!

Try hitting Cmd + Option + D and check if dock gets back on.

Had the same on two different MacBook Pro's.

As simple as it sounds I just had to restart the system and that's it. Dock appeared again on both laptops. Just in case you may check Dock hide option after booting the system by pressing option+command+D as well.

Cheers

This didn't work at all.

Only after the restart and re-correcting the preferences, the dock re-appeared and now the Cmd + Option + D trick works as well.

I found a temporary fix. Go to System Preferences -> Dock -> Size, then click on the slider. Clicking on it will display the dock.

same here, rebooted it came back!

Seems to be related to having a 2nd display.

Disconnect the 2nd display on boot. The dock shows. Then connect the 2nd display.

Works for me...once so far.

I went to System Preferences - General - then unticked and ticked "Automatically hide and show menu bar" and this made my dock pop-up work again.

The only way I have found it to work is by stroking upwards on the mouse pad with 3 fingers. It works but it is not convenient, nor do I believe it was supposed to work this way. Apple needs to fix this quickly.