Question2Replies67Views NickM591 Member since 2017 24 posts Contra Costa County Posted: 1 year agoLast activity: 1 year 11 months ago Closed Solved ServiceClient on OpenSpan ToolboxDoes anyone have encounter this problem below? We have a web service which is running fine when consuming from the browser, but when running on Pega Robotic Studio I get the error below."The HTTP request is unauthorized with client authentication scheme 'Anonymous'. The authentication header received from the server was 'Negotiate,NTLM'Thanks for the help in advance. Robotic Process Automation ×Close popoverFacebookTwitterLinkedinEmail Copy Link Copied! Moderation Team has archived post This thread is closed to future replies. Content and links will no longer be updated. If you have the same/similar Question, please write a new Question. Accepted Solution Posted: 1 year agoNickM591 Contra Costa County replied to NickM591I have this resolved by enabling Anonymous authentication on web service host site. Thanks. Posted: 1 year agoMitchell PEGA replied to NickM591I'm glad you got it. NTLM authentication isn't supported by the Service Client component unfortunately which is why you experienced this error.