Help with MSI (Microsoft Installer) error 1618: Another installation is already in progress. Complete that installation before proceeding with this install.
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You cannot have two separate instances of Windows Installer setups running at the same time. If you are using a custom action to trigger a second MSI setup, you will need to have your script wait for the wrapper script to close before proceeding.
If you are attempting to install a MSI manually, or without any custom actions that may be to blame try an extra reboot. Still having problems? See InstallSite.org's MSI FAQ entry here for some possible solutions such as emptying the InProgress or PendingFileRenameOperations registry keys.
Answered 01/21/2004 by: AppDeploy.com
Red Belt

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