OPC: Data socket returns 0x80040154 (REGDB_E_CLASSNOTREG)

[CVI-User]

The CVI OpcClient-Demo says "Class not registered", but the OPC server is running (on localhost) and a non-CVI OPC client can connect to it. Tried with 9.0 and 2010SP1 Runtime, it's Windows XP Pro 2002 SP3.

Can someone give a hint where to look, at the CVI part or the server? Thanks.

[CVI-User · Accepted solution]

SOLVED

I just installed the runtime and copied the exe to the target. That doesn't work.

After I build a distribution with NI DataSocket component and installing it the copied OpcClient works. Even after uninstalling said distribution...