Error: opening these files might be harmful your computer
To resolve this issue, open Internet Explorer
Click Internet Options under Tools
Click on the Security Tab
Click Local Intranet and click the Sites button
Check the box next to the following:
Enable All Local....
Enable All Network...
Enable All Site...
Click the Advanced button and add the IP address of the network computer where the file is stored.
This will resolve the issue and will not generate future warnings.