PC
From your browser, go to: Tools --> Internet Options.
Click on the Security settings Tab.
Make sure that the slider is set for medium.
If it is set on custom you can click the "Default Settings" button to reset these to the "medium" setting.
Click OK.
MAC
From your browser, go to: Edit --> Preferences.
Double click on the "receiving files" item in the left window..
Single click on the sub-item named cookies.
In the right window, select the drop down menu item named "never ask" or "ask for each site" (in which case you will have to accept the cookie when prompted).
Click OK.
