Author Topic: ESXi 6.5U2 to 6.7U2 upgrade results in EVC error, host won't reconnect  (Read 163 times)

netfreak

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Using the Cisco custom ESXi 6.7U2 image, it's missing certain security patches which we apparently already had on the 6.5U2 install and the host would no longer reconnect into the cluster. The error message provided indicated an EVC issue and that a processor feature was missing on the host or something along those lines. The actual solution was installing a few newer patches including cpu-microcode by uploading the vib to the host and installing via CLI. Host would reconnect to the vCenter after a reboot allowing you to proceed with additional patching (if needed).