Adobe Digital Editions 4.5.x fails.
Suppose you install Adobe Digital Editions 4.5.x, and the installation fails according to the Easy Software Deployment Agent. You will see the exit code 1223 on the screen with the explanation, “User has the edited version.” However, Adobe Digital Editions is available on the system. Strange but true.
Add exit code 1223 to the Successful Exit Codes within the Return Codes menu.
Open the Manager console. Then click Settings > Return codes. Within the Successful Exit Codes section, add the return code/exit code 1223. Click OK. Click Save and Deploy within the Manager console. The installation will now be complete.