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A small file saved on people's computers to help store preferences and other information that's used on webpages that they visit.

  • Cookies can save people's settings on certain websites and can sometimes be used to track how visitors get to and interact with websites.
  • Google uses cookies in various ways. For example, remarketing and Google Analytics both use cookies to help do things like run your ads or track your success.
  • The conversion tracking feature of AdWords also uses cookies. To help you track sales and other conversions from your ad, it adds a cookie to a person's computer when the person clicks an ad. 
  • Sometimes cookies can cause problems when you're signing in or moving through your AdWords account. When this happens, the best way to fix this is to clear the cache and cookies that are saved for your Internet browser.

How to clear your cookies
Google's privacy policy

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