To clear browser cookies and cache in Internet Explorer
Click Tools > Internet Options.
Click Delete Files and Delete Cookies.
To clear browser cookies and cache in Mozilla Firefox
Click Tools > Clear Private Data.
Select at least these three checkboxes:
Cookies
Cache
Authenticated Sessions
Click Clear Private Data Now.
To clear browser cookies and cache in Google Chrome
Click Tools > Clear browsing data.
Select at least these checkboxes:
Delete cookies and other site and plug-in data
Empty the cache
Click Clear browsing data.