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Problem:
The server displays the TAPI line initialization error, and a client trying to connect to the server may receive the error code 0x8007042C, which means that the dependency service or group failed to start.

Solution:
This error is typically seen on embedded processors or PCs with custom operating system load outs. OPC communications are highly dependent on Microsoft technologies used for OLE; some of the components used are loaded with telephony support in the operating system. Users must ensure it is enabled.