Click the context menu in the browser toolbar to the right of the address bar.
Choose Settings.
Click "Show Advanced Settings."
Click Content settings in the Privacy section.
Ensure that the bullet for "Allow local data to be set (recommended)" is checked.
Also ensure that "Block third-party cookies and site data" is unchecked.
Firefox
Click the Tools menu from the top toolbar.
Choose Options.
Click the Privacy tab.
Under "History" select "Use custom settings for history" from the drop-down menu beside "Firefox will."
Ensure that the checkboxes for "Accept cookies from sites" and "Accept third-party cookies" are both checked.
Click OK.
Safari
Click the Safari menu from the top toolbar.
Choose Preferences.
Click the Privacy tab.
Click the Never checkbox for Block Cookies.
Please enable cross-site scripting in Safari settings and enable cookies.
Internet Explorer
Click "Tools" (the gear icon) in the browser toolbar.
Choose Internet Options.
Click the Privacy tab, and then, under Settings, move the slider to the top to block all cookies or to the bottom to allow all cookies, and then click OK.