SOAP, Certificate Required

[egnew 3]

Our web applications have been moved to IIS on a server running Microsoft Windows Server 2019 Standard.  I have two SOAP applications (Delphi 10.3.3) running on the server.  One of the SOAP applications is accessed by external third-party clients and works fine.  The second SOAP application handles geocoding tasks for internal users and is accessed using our main client application (Delphi XE2).

 

When users access the geocoding SOAP over https, they get the message:

"A certificate is required to complete client authentication

- URL:https:.../indigoservice.exe/soap/IIsservices
- SOAPAction:urn:IsServicesIntf-IIServices#GeocodeArea"

 

I can't install certificates on users computers and so I don't know how to resolve this issue.  I made changes to the SOAP source to run over http and opened the http port on the server.  That didn't work either as users get the message:  Class not registered, ClassID: {C0EAC9EB-1D02-4BD9-8DAB-4BF922C8CD13}.

 

I can rewrite the routine without using SOAP but would like to get this online ASAP.  What can be done to get this working?

 

Thanks