LR 12.0 Scripts cannot pass with error -27492

Hi all,

     Now I am doing performance testing on a B/S website cause it is using SSO(Single sign on) technology, so when after recording, the scripts runtime-setting ->Internet Protocol->Preferences-> WWinlnet reply insteadof.. must be checked. otherwise the scripts will trigger a error 401. But when I checked, it will trigger error -27492 "HttpSendReq..".

Who can help me???