OK, while I was debugging the other problem, the engine complained about the internal engine cert expiring in three months. As I had to completely shutdown the entire data center (all hosts including the engine itself) at once, I figured I'd go ahead and renew the engine cert so I wouldn't have to do it later. First problem: engine-setup won't renew the engine certificate (engine.cer / engine.p12) at three months out despite the scary warnings in the notifications tab in the Admin WebUI. It can be forced to by renaming the files however. Second problem: After having renewed the engine certificate, the engine can no longer update a host certificate nor (re-)install a host. Giving me the following error in the Admin WebUI: "Error while executing action InstallVds: Internal Engine Error" I've attached the logs from the engine. -Patrick Hibbs