Unable to load driver dll 'c:\Program Files\National Instruments\Shared\ NI O...

[robert427]

At times when starting labview the NI-OPC Server fails to communicate to the micrologic and PLC5 PLC's.  Restarting the NI-OPC will fix the problem, but I can not ask the operator to do this.

 Error in NI-OPC:  Unable to load driver dll 'c:\Program Files\National Instruments\Shared\ NI O...

[chrisger]

Hi there

if the NI-OPC Server is a Windows service you may want to stop/start the servive on the command line using NET shell:

NET STOP   <service>

NET START <servce>

Run "NET START" to get a list of all running services.

[Anna_K.]

Hello,

Were you able to implement the above solution? Does this error occur right as you start the server? And is there an error code associated?