When launching Acrobat on a Mac, you receive an error message that includes the words, "The serial number 1591[...] is already in use by the maximum allowed computers."

  1. Close all Creative Cloud and Adobe processes using Activity Monitor (Finder > Applications > Utilities > Activity Monitor). This would include all processes with the Creative Cloud icon and all processes that begin with Adobe. To cancel, double-click the process and click the Quit button, then the Force Quit button.
  2. Download and unzip this file.
  3. In Finder, go to Go > Go to Folder....  Type ~/Library/Preferences and click the Go button. Insert the downloaded and unzipped file (com.adobe.acrobat.pro.DC.plist) into the Preferences folder. Authenticate if necessary. If a file with the same name is already there, replace it with the downloaded file.
  4. Open Terminal, type sudo killall cfprefsd and hit Enter.
  5. Restart the machine.




Keywords:When launching Acrobat on a Mac, you receive an error message that includes the words, The serial number 1591[...] is already in use by the maximum allowed computers. cc creative suite cs ccp adobe build make installer acrobat   Doc ID:99746
Owner:Warren R.Group:DoIT Help Desk
Created:2020-03-30 12:37 CSTUpdated:2020-08-05 12:16 CST
Sites:DoIT Help Desk, DoIT Tech Store, Product Management
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