0 Make sure to choose the edition that meets your current and future needs.
0 Select a service account during the installation rather than 'Local system account.
0 If the SQL databases exist due to a failed or corrupt installation, delete them before a reinstallation.
0 To uninstall BizTalk, launch the uninstallation from within Control Panel | Add/Remove Programs, manually clean up the leftover files as listed in the Uninstallation section, and make sure to reboot after the uninstallation before reinstalling the product.
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