
Use Microsoft’s Windows Installer Cleanup utility to remove traces of previous installations. Software that were not removed completely from Add/Remove programs, can create problems when you try to do software deployment. Remove files of earlier installations before Reinstallation To eliminate Software Deployment failure with Unknown Error Code error message, try the following options:

If the problem persists, collect MSI log, Process Monitor log during installation, and System information (in Acronis True Image, in Acronis Backup 12.5 and Acronis Backup 12, in Acronis Backup (Advanced) 11.7) and contact Acronis Support.Software Deployment failure - Unknown Error Code Problem

: MainEngineThread is returning 1603 CauseĪnother installation is in progress, or a reboot is required after a previous installation. Counter after decrement: -1 MSI (c) (C4:9C) If counter >= 0, shutdown will be denied. : Decrementing counter to disable shutdown. : Note: 1: 1402 2: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Installer\Rollback\Scripts 3: 2 MSI (s) (5C:6C) Counter after increment: 0 MSI (s) (5C:6C) : Incrementing counter to disable shutdown.

: Machine policy value 'DisableRollback' is 0 MSI (s) (5C:6C) : User policy value 'DisableRollback' is 0 MSI (s) (5C:6C) : MainEngineThread is returning 1603 MSI (s) (5C:6C) Installation fails with these messages in MSI log: You install an Acronis product in a Windows operating system.
