This is the Windows Server Update Services support team blog. We cover all things relating to WSUS and Windows Update.
Here's a great tip from Rob Coffey, a real life WSUS support engineer from North Carolina. We've seen reports of this occurring if you upgrade to WSUS Service Pack 1 and then remove the SP although I haven't been able to confirm this myself. If you have a bunch of clients trying to get updates and failing with a 0x80190194 error then this may be something to check:
Issue: When checking for updates, clients may all fail with a 0x80190194 error.
Cause: This can occur if the selfupdate virtual directory has been removed or is missing from the Default Web Site.
Resolution: To resolve this issue we will need to reconfigure the selfupdate virtual directory. To do this:
Once your done test it out - you should be able to successfully get updates now assuming everything else is working properly.
More Information: The client starts its detection cycle by checking if it's running a compatible version of the client prior to talking to the WSUS server. This is done by downloading http://wsusservername/selfupdate/wuident.cab, therefore if the selfupdate virtual directory has been removed or is missing then the clients will fail with the 0x80190194 error when attempting to check for the wident.cab file.
J.C. Hornbeck | Manageability Knowledge Engineer
PingBack from http://baalchina.nau.edu.cn/2008/09/wsus-0x80190194/
I have a similar problem. Using Win7 Ultimate 64-bit, I uninstalled SP1. Attempting to reinstall SP1 gives this error, though I never installed IIS and have never heard of WSUS.