Problem : WSUS 3.0 Error 12012. The API Remoting Web Service is not working.
I have installed WSUS 3.0 on a Windows Server 2003 SBS but I am unable to connect to the administration MSC*.
I have the follow error in System Logs > Application.
Event Type: Error
Event Source: Windows Server Update Services
Event Category: Web Services
Event ID: 12012
The API Remoting Web Service is not working.
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
I have used wsusutil checkhealth to make sure there are no other problems and this appears to be the only error I have.
I have uninstalled and reinstalled both version of the ASP .Net frame work (1.1 & 2.0) with no fix.
I started to follow the Microsoft Help & Support document regarding this error message, but when I was asked to compare 3 vbs files, Microsoft only listed partial parts of these files, making it impossible for me to tell if the vbs files are correct.
I have, however, checked the cacls on the WebServicesApiRemoting30 and can confirm these ACEs are correct.
I have reinstalled WSUS 3.0, but still no luck!
Solution : WSUS 3.0 Error 12012. The API Remoting Web Service is not working.
Tried everything, my last resort was getting in contact with Microsoft Support (thankfully we are a partner so support was free !)
After 3 – 4 hours of them remotely trying to resolve the problem, it was a little tick box in IIS that eventually gave us the results.
I/You need to ensure that HTTP Keep Alive is ticked within IIS.
To do this…
Open IIS > right click WSUS Administration > click properties > on the Web Site tab under Connections tick Enable HTTP Keep-Alives.
Fixed the problem!!