Hi @Jack Art ,
Welcome to Microsoft Q&A!
The “Add Service Reference” functionality is only available in the .NET Framework projects.
For .NET Core projects (including the .NET 8.0 target), you can use the WCF Web Service Reference tool to add service reference. But it only supports C# projects currently.
For more information, you can see: Use the WCF Web Service Reference Provider Tool.
About adding VB support in WCF Web Service Reference Provider Tool, you can follow this link to see the progress.
Thanks for your understanding!
Sincerely,
Anna
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