Client installed but showing as 'No' to SCCM console - troubleshooting tips

It generally happens during upgrade or restructuring of SMS/SCCM infrastructure. Anyway, if it happens with you, try below steps-

1. list out all these clients or make collection of these clients
2. run script to trigger discovery data collection cycle on listed machines or use right click tools to initiate discovery data collection cycle on machines listed in collection
3. once you have finished with above two actions, try update collection membership and refersh then.
4. Check status and make yourself happy.

Pls find link to download right click tools.
http://myitforum.com/cs2/blogs/rhouchins/0401ConfigMgrTools.zip

and here's script to initiate discovery data collection cycle on affected clients-

'copy below code to notepad and save it as discovery.vbs
'and run remotely on clients with help of psexec.exe utility

actionNameToRun = "Discovery Data Collection Cycle"

Dim controlPanelAppletManager
Set controlPanelAppletManager = CreateObject("CPApplet.CPAppletMgr")
Dim clientActions
Set clientActions = controlPanelAppletManager.GetClientActions()
Dim clientAction
For Each clientAction In clientActions
If clientAction.Name = actionNameToRun Then
clientAction.PerformAction
End If
Next
wscript.echo "Executed: " & actionNameToRun     ' if you want to get message

these are some more actions which can be used in above script as and when required-

'Software Metering Usage Report Cycle

'Request & Evaluate Machine Policy
'Updates Source Scan Cycle
'Request & Evaluate User Policy
'Hardware Inventory Collection Cycle
'Software Inventory Collection Cycle
'Software Updates Assignments Evaluation Cycle
'Peer DP Maintenance Task
'Machine Policy Retrieval & Evaluation Cycle
'MSI Product Source Update Cycle

Happy troubleshooting!