CoreDragCreate error - drag&drop and copy-paste stop working From time to time drag&amp;drop and copy-paste stop working. Somehow the clipboard machinery gets messed up (I suspect Microsoft Remote Desktop is causing it). In the console I see the following sequence when I try to drag something:

09-06-16 10:13:54,991 Finder[59451]: CFPasteboardRef CFPasteboardCreate(CFAllocatorRef, CFStringRef) : Lock timeout
09-06-16 10:13:54,991 Finder[59451]: CoreDragCreate error: -4960
09-06-16 10:13:54,991 Finder[59451]: error in CoreDragDispose: -1850


The console displays similar lines for every application that I try to drag in.

What is causing this issue and how can it be fixed?
I don't know what is causing the issue, but the pboard process is responsible for copy and paste.  Restarting it might provide a fix (temporarily), and can be less disruptive than logging out.  From this answer:


  Check if the pboard daemon is running:
  
  launchctl list | grep com.apple.pboard
  
  If the pboard daemon is running, then stop and start it. If it's not running, start it:
  
  launchctl stop com.apple.pboard
  
  launchctl start com.apple.pboard
  
  Then, you may need to restart the application(s) where cut-and-paste is not working.