Anice simple tip from Joris Poelmans on removing the warning message when we right-click in a documents library explorar view.
When you switch a SharePoint document library to explorer view, you can directly copy documents from within explorer view to your desktop. However, when you perform a right click in a SharePoint document library, you get a warning “running a system command on this item might be unsafe. Do you wish to continue?”
This is actually caused by a security setting in Internet Explorer – to remove this warning, you need to perform the next steps: Go to Tools > Internet options in Internet Explorer. Select the second tab Security and click Custom level. Under the miscellaneous section, you will see Launching program and files in IFrame. Change the radiobutton to enable.
You can find this tip here.