Warning message every time i go to open a windows file (from finder)

Hello Forum people,
problem -> updated || from 10.2 to 10.3 version. / possibly mac update around that time also (not sure as auto updates)-> every time machine start-up (mac reboots) when i open a windows file in finder warning message pops up (refer attachment), after the initial opening of the program (for example excel file) even following a restart of the VM it will opening without the warning (seems to be something in mac side)? Performed revert to 10.2 version (and another appearance change that i was not happy with was rectified) however the warning message continues to plague...
I have been using || over about 6 years now and it has never occurred with any previous version, that is I always use finder to open files. HOWEVER the lovely people at tech support || said this is to be expected.. what a load of rubbish!
Is there a fix on the mac side to perform (mavericks OS) ...should i contact mac support...
Any one experiencing the same issue out there???

(oops cant find screen shot.... gist of warning message is "your are opening ...... for the first time...")

 

PLEASE REFER SCREENSHOT ATTACHED

 

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