Power outages are not infrequent where I live (something I find quite confounding – to be honest) and earlier this week we had an extended power outage and my Hyper-V servers were powered off uncleanly. When the power returned I had to sit down and make sure that everything came back correctly. At first glance, everything looked good. My Hyper-V servers powered up happily and started up all the virtual machines. Hyper-V Replica reported that it was in a critical state, but it automatically scheduled resynchronization for all of my virtual machines. But as I was going through the virtual machines, I found a problem. Something had gone wrong with my firewall. I could not figure out what exactly was wrong …
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