We've got a system that has been making OPCDA calls without issue for some time - when calling Windows Server 2012 R2 (Version 6.3, Build 9600). Recently, however, we've tried talking to a Windows 10 machine (Version 21H2 (OS Build 19044.1889 and we're getting an error:
System.NotSupportedException: The URL scheme 'OPCDA' is not supported.
There must be something different between the two implementations; however, I've been unable to find any documentation. Anyone have suggestion on troubleshooting this?
The .Net OPC API is case sensitive for its analysis of the URL scheme. Convert it to lower case, and it will work (or at least get you to the next error).