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This morning we lost connectivity to all the virtual servers hosted on one of the ESXi machines. Trying to connect to it using the vSphere client we're getting the following message:

Call "ServiceInstance.RetrieveContent" for object "ServiceInstance" on Server "<the_machine's_IP>" failed.

The machine itself is up and running (pingable, the http/https services are accessible and look normal, the system console is on and doesn't contain anything suspicious).

In the web interface, clicking the "Browse datastores in this host's inventory" link, the request timesout with no error code.

How do we go about investigating this issue? Thank you very much!

EDIT: resolved: it was an IP address conflict: the DHCP assigned the same IP to a random other machine, as was statically assigned to the host. Fixing the IP issue solves the problem.

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If I understand correctly, you are connecting straight to the esxi host, not a vcenter server. Have you restarted the management agent? I would start with that. –  benjarrell Feb 6 '12 at 19:01
Do you really think someone's going to go to the trouble of writing a virus or a worm, infect your machine, and then have that virus do nothing but adds line breaks to source code files? –  Marc B Jul 12 '12 at 18:13
A perfect example of why you either shouldn't use DHCP for servers or should use reservations if you insist on using it. –  Chopper3 Sep 5 '12 at 14:03

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