The guys in the team were upgrading an ESXi 6.7u3q host to 7.0u3g and they found that once upgraded, they could not vMotion powered on VMs to the host. Error they were seeing was:

Task Name: Relocate virtual machine
Status: A general system error occurred: Invalid fault 

I checked hostd.log and found the following:

2023-08-05T20:10:26.207Z info hostd[2099895] [Originator@6876 sub=AdapterServer opID=lib2tr14-392654-auto-8ez3-h5:70076941-cc-01-48-4f75 user=vpxuser:VSPHERE.LOCAL\Administrator] AdapterServer caught exception; <<5217f91e-b388-dd1a-0bcc-b971cade8b0f, <TCP '127.0.0.1 : 8307'>, <TCP '127.0.0.1 : 56080'>>, ha-vmotionmgr, vim.host.VMotionManager.initiateDestination>, N3Vim5Fault19PlatformConfigFault9ExceptionE(Fault cause: vim.fault.PlatformConfigFault
--> )
--> [context]zKq7AVICAgAAAKEvNgENaG9zdGQAACJDF2xpYnZtYWNvcmUuc28AAX/nz2hvc3RkAAF6988B/mHPAXyPXwGoL1+CWQ8ZAWxpYnZpbS10eXBlcy5zbwABipJSAKzHLQA0Ay4A4hA/Azt9AGxpYnB0aHJlYWQuc28uMAAEbdEObGliYy5zby42AA==[/context]
2023-08-05T20:10:26.215Z info hostd[2099895] [Originator@6876 sub=Solo.Vmomi opID=lib2tr14-392654-auto-8ez3-h5:70076941-cc-01-48-4f75 user=vpxuser:VSPHERE.LOCAL\Administrator] Activation finished; <<5217f91e-b388-dd1a-0bcc-b971cade8b0f, <TCP '127.0.0.1 : 8307'>, <TCP '127.0.0.1 : 56080'>>, ha-vmotionmgr, vim.host.VMotionManager.initiateDestination>
2023-08-05T20:10:26.215Z verbose hostd[2099895] [Originator@6876 sub=Solo.Vmomi opID=lib2tr14-392654-auto-8ez3-h5:70076941-cc-01-48-4f75 user=vpxuser:VSPHERE.LOCAL\Administrator] Arg migrationId:
--> 1011845975857744995
2023-08-05T20:10:26.215Z verbose hostd[2099895] [Originator@6876 sub=Solo.Vmomi opID=lib2tr14-392654-auto-8ez3-h5:70076941-cc-01-48-4f75 user=vpxuser:VSPHERE.LOCAL\Administrator] Arg dstConfigPath:
--> "/vmfs/volumes/41f8fd2d-4a203baa/MyServer-Test-74yN/MyServer-Test-74yN.vmx"
2023-08-05T20:10:26.215Z info hostd[2099895] [Originator@6876 sub=Solo.Vmomi opID=lib2tr14-392654-auto-8ez3-h5:70076941-cc-01-48-4f75 user=vpxuser:VSPHERE.LOCAL\Administrator] Throw vim.fault.PlatformConfigFault
2023-08-05T20:10:26.215Z info hostd[2099895] [Originator@6876 sub=Solo.Vmomi opID=lib2tr14-392654-auto-8ez3-h5:70076941-cc-01-48-4f75 user=vpxuser:VSPHERE.LOCAL\Administrator] Result:
--> (vim.fault.PlatformConfigFault) {
-->    text = "Failed to attach all ports",
-->    msg = "",
--> }

Turns out the guys forgot to install the new V7.0 host license!

I thought I'd put this out there as I initially spent about 20 minutes on wild goose chases until I found the problem!