Right-click on your user name and select Properties.

In the Computer Management dialog, click on System Tools > Local Users and Groups > Users.

Select Start > Control Panel > Administrative Tools > Computer Management.

Follow these steps to confirm administrative rights on your computer: Ensure that you have enough privilege to install the software. If UAC has been enabled in the system and you wanted to install the software using system account or administrator account, you will get the 'unknown error code'. Once removed, try reinstalling the software.Įnsure the User account has administrative privileges to install software For more information, refer to Microsoft’s knowledge base article Description of the Windows Installer CleanUp Utility. This utility does not remove files installed by the installation, which may need to be removed manually. 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: Inability to extract file onto the folder due to insufficient disk space.Rejection of a related pop-up by the end user during installation.

User Privilege issues to install software.Application is already installed in the client computer and you want to reinstall the same.You will encounter this as a result of some specific error related to the application being installed. You are unable to deploy software and you get the message - Failed with an unknown error, during the process. Software Deployment failure - Unknown Error Code Problem

Skype error code 1618