I forgot to mention, I've been combing through the vminst.log file. I see some errors, but nothing helping me fix the issue:
2019-03-06 13:05:05.444-06:00| vcsInstUtil-10964411| I: ParseStatusFile: curr error msg: "The installation of vCenter Server failed due to an internal error."
2019-03-06 13:05:05.444-06:00| vcsInstUtil-10964411| E: ParseStatusFile: Displaying error message for "VMware vCenter Server": "The installation of vCenter Server failed due to an internal error.
This is an unrecoverable error, please retry install. If you encounter this error again, please search for these symptoms in the VMware Knowledge Base for any known issues and possible resolutions. If none can be found, collect a support bundle and open a support request."
2019-03-06 13:18:27.437-06:00| vcsInstUtil-10964411| E: wWinMain: MSI result of install of "E:\vCenter-Server\Packages\vcsservicemanager.msi" may have failed: 1603 (0x00000643)
2019-03-06 13:18:27.437-06:00| vcsInstUtil-10964411| E: LaunchPkgMgr: Operation on vcsservicemanager.msi appears to have failed: 1603 (0x00000643)
2019-03-06 13:18:27.437-06:00| vcsInstUtil-10964411| I: PitCA_MessageBox: Displaying message: "Installation of component VCSServiceManager failed with error code '1603'. Check the logs for more details."