Technology problems overwhelmed the launch of new health insurance markets last Tuesday.
The federal site, which serves 36 states, drew millions of users. But many consumers were unable to get on the site and others encountered glitches that prevented them from successfully completing their applications.
The administration previously announced it is adding equipment to handle the high volume. The general information section of the website will remain available during repairs.
Consumers have until Dec. 15 to enroll for coverage that starts Jan. 1.
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