Error sending DAV request. HTTP code 0, status

Yesterday one of my colleague identified one error which might be helpful to you guys. 

We are using SCCM 2007 r3 and server is 2003 sp2.  We are using http port 8540 and for https 8541

One of our clients reported that they are unable to deploy software via run advertised program. We have checked the policy agaent.log and policy evelutor.log but all are good and the client is able to download the policy from MP. Then we checked datatransfer.log and found the error like below.

After searching a few blogs and scratching the head our colleague find out that the problem is on IIS default website. 

So he r/c on it, go to properties and check that the port must be our defined custom port 8540 but accidentally it was 80. So we changed it and restart the IIS. After that all are good.

Thanks Haji ali for troubleshooting the issue .

And if you found this error on SCCM 2012 you can click on this