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.



KeywordsWhen 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 ID99746
OwnerNick R.GroupDoIT Help Desk
Created2020-03-30 12:37:38Updated2024-02-01 08:45:02
SitesDoIT Help Desk
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