I cant see one of my virtual machines under my esx server

I cant see one of my virtual machines under my esx server

Hi everyone, I have an issue with a ESX server, this server is discovered by app manager, but it missed one virtual machine, even I tried so many times to rediscover the ESX server but nothing happens. The missed machine is up and running, actually it is monitored at op manager, so this is weird because is not possible that the monitoring is working for it in op manager but app manager not.

Please give some help with this!

Thanks!

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