Unsupported Functionality of vSphere Client 6.5 (a.k.a HTML 5 Client)

Refer this for latest updates http://pubs.vmware.com/Release_Notes/en/vsphere/65/vsphere-client-65-html5-functionality-support.html
As of now these are the unsupported Features in HTML 5 Client

Unsupported Functionality

Functional Area	Workflow	Unsupported in the vSphere Client	Additional Notes
Cluster	Configuration	DRS/HA virtual machine overrides Predictive DRS HA runtime monitoring Create and delete datastore cluster Proactive HA
Cluster	Datastore	Monitor SDRS Configure SDRS settings, rules, and VM overrides
Cluster	Monitor	Resource utilization and reservation views DRS utilization monitoring Overview performance charts
Content Library	Deploy from template	Custom options
Datastore	Management	Connectivity view (VMFS) Multipathing view (VMFS) Device Backing view (VMFS) Connectivity view (NFS) Datastore default policy read-only view Create NFS datastore wizard Increase VMFS datastore wizard Create VVOL datastore wizard VVOL datastore default profiles VVOL capability profiles capacity summary portlet Upgrade VMFS datastore Mount and Unmount VMFS datastore Mount and unmount existing VVOL datastore to hosts Unmount NFS datastore from hosts Mount existing NFS datastore to additional hosts Register virtual machine Refresh datastore capacity Configure storage I/O Control Edit multipathing policy and paths for VMFS datastore devices Copy, move, rename, and inflate datastore files Change datastore default policy Datastore protocol endpoints Datastore selector advanced mode Datastore capability sets
Datastore	Storage Providers	Storage providers master details read-only view Register new storage provider Remove storage provider Rescan storage providers Refresh storage provider certificate
Fault Tolerance	Displays and Operations	Fault tolerance operations Fault tolerance summary portlet Migrate secondary workflow
Host Management	Host Configuration	ESXi NTP settings ESXi join and leave AD/LDAP domain Move ESXi host into and out of cluster Move ESXi host between folders ESXi host certificate operations ESXi change lockdown mode settings ESXi PCI passthrough devices Host edit boot options ESXi two-factor authentication Configure host profiles
Host Management	Network Configuration	Distributed virtual switch Edit standard switch portgroup settings Add standard port groups Add physical network adapters Edit TCP/IP stacks Manage physical network adapters (VSS/VDS) Migrate VMs to another network
Host Management	Settings	Host VVOL protocol endpoints
Host Management	Storage Devices	Erase partition Turn locator LED on and off Mark and unmark flash disk
Host Management	Storage Policy	Global view Summary view Monitor view Manage view Related items view VM storage policy assignments read-only view Create and edit storage policy wizard Integrate storage policies in deploy OVF wizard Storage policy delete, check compliance, and reapply Reset VSAN default policy Delete storage policy component
Host Storage	Adapters	Rescan storage adapter Enable and disable paths Storage adapters list
Host Storage	iSCSI	Edit general settings View iSCSI hardware network settings Add software iSCSI adapter Disable software iSCSI adapter Hardware iSCSI to IPv6 support Add and remove network port binding View static and dynamic discovery target details Add static and dynamic discovery targets Edit adaptor authentication Edit target authentication Remove target Advanced options
Host Storage	Management	Edit multipathing policies Attach and detach device Rescan storage Refresh storage system Update SCSI LUN display name Datastore list integration Add and remove software FCoE adapter Host cache configuration Protocol endpoint properties, paths, and datastores I/O filters
Host Storage	Virtual Flash	Resource management Host swap cache configuration Add virtual flash resource capacity
Platform	508 Compliance	Initial support
Platform	Actions	Action button bar
Platform	Advanced search	Search for VMs by compliance status
Platform	Docking	Drag and drop, close, and restore panes
Platform	Inventory Tree	Drag and drop Inline rename Aggregated nodes
Platform	Live Refresh	Object navigator live refresh Related lists live refresh
Platform	Object Selector	Show recent objects
Platform	Portlets	Reorder, expand, collapse, close, and persist portlets
Platform	Recent Objects View	View recent object pane
Platform	Related Items Lists	Action button bar Filter list Quick filter lists
Platform	Selection Widget	Search
Platform	Wizards	TIWO (Things I am Working On) wizard Sticked workflows (wizard over wizard)
vApp		All edit and display settings All workflows
vCenter	Management	Synchronize all VSAN storage providers
VCHA	Management and Deployment	All workflows
VM Administration	Compliance	Check VM compliance SPBM compliance column in VM list
VM Administration	Deployment	Deploy VM from content library wizard
VM Administration	Global Permissions	Read only view of global permissions details Create permission Edit existing role of a permission Right click on object to add permission
VM Administration	Profiles	Manage VM profiles (including RGs) Batch manage VM profiles
VM Administration	Roles	Read only view of roles details Create role Clone role
VM Administration	Single Sign-on	SSO users and groups SSO configuration
VM Administration	Storage Policies	Reapply storage policies for out-of-date VMs Storage policy components view Create and edit storage policy component dialog Delete storage policy component
VM Administration	Summary	VM compliance summary portlet
VM Configuration	VM Edit Settings	Device configuration options Adding the hardware devices: exist hard disk, RDM disk, floppy drive, serial port, parallel port, host USB device, USB controller, SCSi device, PCI device, SCSi controller, SATA controller Virtual machine options SDRS rules vApp options
VM Configuration	VM Summary	Advanced configuration portlet Virtual machine storage policies portlet vApp details portlet Update manager compliance portlet Video card details in hardware portlet
VM Crypt	All	All workflows
VM Customization	Image Customization	All workflows
VM Deployment	Deploy OVF/OVA	Deploy OVF/OVA
VM Lists	Templates	Sorting and filtering by column	Design and semantical differences from the vSphere Web Client 6.5 The vSphere Client introduces new visual and interaction design on how column visibility and filtering are managed. It’s done through the columns header.
VM Lists	VMs	VM list on vApp Sorting and filtering by column	Design and semantical differences from the vSphere Web Client 6.5 The vSphere Client introduces new visual and interaction design on how column visibility and filtering are managed. It’s done through the columns header.
VM Migration	Drag & Drop	List to list Tree to list List to tree To and from host outside the cluster To and from virtual machine folder and data center To and from datastore and datastore cluster To and from standard network, opaque network, or distributed port group
VM Migration	Migrate VM	Migration to another datastore or datastore cluster Migration of compute and storage Migration requiring a network change Migration to another VMware vCenter cluster Migration of multiple virtual machines at once
VM Migration	Move To	All workflows
VM Operations	Install and Upgrade VMware Guest OS Tools	Batch mode install, upgrade, and unmount for multiple virtual machines selected from a virtual machine list Client-side checks for insufficient privileges or incorrect states
VM Operations	Power Operations	Keyboard shortcuts for power operations	Workaround Open the Guest OS action menu to see the available power operations.
VM Operations	Remote Console	Changing preferred console from the gear icon
VM Provisioning	Clone Template to Template	All workflows
VM Provisioning	Clone VM to Template	All permission checks	Design and semantical differences from the vSphere Web Client 6.5 Compatibility check control layout is similar to the vSphere Web Client 6.0 design with no popup when more than a single message is available.
VM Provisioning	Clone and deploy VM from Template	All permission checks Cloning virtual machines datastore clusters that are not SDRS enabled	Design and semantical differences from the vSphere Web Client 6.5 Compatibility check control layout is similar to the vSphere Web Client 6.0 design with no popup when more than a single message is available.
VM Provisioning	Convert Template to VM	All workflows
VM Provisioning	Convert VM to Template	Conversion of multiple virtual machines
VM Provisioning	New VM	Permission checks on data centers, clusters, folders datastores, and networks Missing devices for hardware customization Creating virtual machines on datastore clusters that are not SDRS enabled Creating virtual machines under resource pool in vApp	Design and semantical differences from the vSphere Web Client 6.5 Compatibility check control layout is similar to the vSphere Web Client 6.0 design with no popup when more than a single message is available.
VM Provisioning	Register VM	All workflows
VM Provisioning	Remove VM	Remove from inventory
VM Snapshot	Snapshot Operations		Design and semantical differences from the vSphere Web Client 6.5 The current design is taken from vSphere Web Client 6.0.
VMFS 6		Add VMFS 6 version in create VMFS datastore wizard Space reclamation settings Edit space reclamation