oraons.dll

I'm using C# to create an Oracle Connection

The error is...
The procedure entry point ons_subscriber_cancelcallback could not be located in the dynamic link library oraons.dll.

I have tried installing the latest version of ODAC but I still get the error.

I'm using a company desktop but installed Oracle Express on it and I'm getting this error.

I googled and found this...
https://forums.oracle.com/thread/2576918

But I have note been able to fix my problem by copying the dll around or by modifying the PATH environmental variable.

Could someone help me through this?
gswitzAsked:
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gswitzConnect With a Mentor Author Commented:
Found the answer...

copy oraons.dll from here...

C:\app\a123273\product\12.1.0\client_2

to here

C:\app\a123273\product\12.1.0\client_2

(for me)
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