- You have a Microsoft Exchange Server 2010 server that has the Hub Transport server role installed.
- You install Update Rollup 2, Update Rollup 3, or Update Rollup 4 for Exchange Server 2010 on this server.
- You run the following command on this server to uninstall Exchange Server 2010:
File ($RoleSetupLoggingPath + "\InstallSearch.msilog")" was run: "Couldn't open package 'C: \Program Files\Microsoft\Exchange Server\V14\Mail
box\MSFTE.MSI'. Another version of this product is already installed. Installation of this version cannot continue. To configure or remove the existing version of this product, use Add/Remove Programs on the Control Panel. Error code is 1638.".
The Exchange Server setup operation did not complete. Visit http://support.microsoft.com and enter the Error ID to find more information.
Exchange Server setup encountered an error.