Ever wondered what Citrix’s official statement on support for VMware ESXi is? Well there is a CTX for that! This is the Citrix Support Statement for VMware ESXi and Citrix XenDesktop.

Is VMware ESXi a supported hypervisor for Citrix XenDesktop?
Yes, VMware ESXi 4 is supported with XenDesktop 4 and above. Pool and Power Management features are not available unless the ESXi installation is matched with a vSphere or a vCenter client.

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