From last 3 days I am facing this issue. I hope some of people here can provide me more highlight on the same. I am getting a error when I try to run Clientdiag on a client system. The WSUS is able to sync and it looks to be working fine. I had a small extract of log that will help to put a bit more highlight on the same. WSUS Client Diagnostics Tool log shows VerifyWUServerURL() failed with hr=0x80072ee6 - the URL does not use a recognized protocol error. What does this means. Second in Windows update log I found the same error. The update url is fine and there are no security services which are blocking it. But still the .cab fail failed in self update process. What should I do now.