To use HealthCare.gov, you must have your browser set to accept cookies. Below are instructions on how to do this in most popular browsers.

At the top of your browser click Tools, then Internet Options.
Click on the Privacy tab.
Click the Advanced button.
Place a checkmark next to Override automatic cookie handling.
Place a checkmark next to Always allow session cookies then click OK.
Click the Edit button and verify that healthcare.gov is not in your "Managed Web sites list." (If you are using Windows XP with SP2 or Windows Vista or IE9 with Windows 7, click on the Sites button instead of Edit.) If healthcare.gov is in the list, highlight it and click Remove. Then click OK.
Click OK to close the Internet Options window.

At the top of your browser click Tools, then Options.
Click on the Privacy icon on the top of the window.
In the History section, for the Firefox will: dropdown, select Use custom settings for history.
Check the box Accept Cookies from sites.
Check the box Accept third-party cookies.
For the Keep until dropdown menu, select they expire.
Click on Show Cookies.
Highlight the cookie you’d like to delete (e.g. healthcare.gov) and click Remove Cookies, then Close.
Click OK on the Options window to close it.

Click the Chrome menu button (three horizontal bars in the top right corner on the browser toolbar).
Select Settings.
Click Show advanced settings.
In the "Privacy" section, click the Content settings button.
In the "Cookies" section, select Allow local data to be set (recommended) then click Done.

At the top of your browser, click on Safari on the top left corner, then Preferences.
In Preferences, click on the Security icon.
In the Accept Cookies section, select Always.
Close the Preferences window.