System preferences not docking station opens

Since that system preferences download Sierra won't open the top left icon Apple.  It doesn't work anymore since the dock on my iMac 2010.  Any suggestions?

Hello

May be corrupt Dock preferences.

Open the Finder. In the Finder menu bar, click go > go to folder

Then copy and paste the following text:

~/Library/preferences/com. Apple.Dock.plist

Click OK, and then place the file com.apple.dock.plist in the trash.

Restart your Mac, then try to open the system preferences of the dock.

Tags: Mac OS & System Software

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