Before upgrading 10.4.0 or earlier versions of D3 Windows, shut down and do a "standard" uninstall of D3. This will leave all of your data and Device Manager settings in place. This is necessary because of a bug in the 10.4.0.1 installer which will not allow installation of the D3 services once the upgrade is complete.
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Brian S. Cram
Principal Technical Support Engineer
Rocket Software
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