Contributed By: Mohammed. Athif Khaleel [MVP SUS/ WSUS]
This Script will Force the Update Detection from the AU client.

Simple copy and paste the code below into a text file and name it AUForceUpdate.cmd

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@echo off
Echo This batch file will Force the Update Detection from the AU client by:
Echo 1. Stops the Automatic Updates Service (wuauserv)
Echo 2. Deletes the LastWaitTimeout registry key (if it exists)
Echo 3. Deletes the DetectionStartTime registry key (if it exists)
Echo 4. Deletes the NextDetectionTime registry key (if it exists)
Echo 5. Restart the Automatic Updates Service (wuauserv)

Pause
@echo on
net stop wuauserv
REG DELETE "HKLM\Software\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update" /v LastWaitTimeout /f
REG DELETE "HKLM\Software\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update" /v DetectionStartTime /f
Reg Delete "HKLM\Software\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update" /v NextDetectionTime /f
net start wuauserv

@echo off
Echo This AU client will now check for the Updates on the Local SUS Server.
Echo After 10-20 mts Have a look at C:\Window\Windows update.log
Echo For any errors; feel free to post on the forum & I will try to help out.
Pause
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Happy Testing!
Athif
Mohammed. Athif Khaleel
"Save the Internet. Keep all Systems Patched"