Two letter domain? No cookies for you!

Michael Geary | Wed, 2007-09-05 08:14

This is too strange to believe, but it is true.

I’ve noticed that it is impossible to log in as a registered user here at using Internet Explorer, even though other browsers work fine.

Now I know why:

Internet Explorer does not set a cookie for two-letter domains (Microsoft Knowledge Base)

IE and 2-letter domain-names (crisp’s blog)

Update to Internet Explorer’s Cookie Jar (IEBlog)

Submitted by Pixy Misa (not verified) on Thu, 2007-09-27 18:38.

As the owner (since 1997) of, I’m all too familiar with this “feature”. Technically, it’s correct, but that’s not a lot of comfort for the users who can’t log in. I was hoping they would fix it with IE7, but no.

Submitted by Hallvord R. M. Steen (not verified) on Sat, 2007-12-29 23:47.

I had no idea IE had this policy, though I know what problem they are trying to solve with it. Have a look here: Yngve Pettersen (Opera developer) explains cookie TLD problems

Opera solves the same problem by disallowing cookies for a name that has no associated DNS entry. That should make work just fine :-) but I know it causes some other sites to fail.

Submitted by Corey Manshack (not verified) on Sun, 2011-04-03 14:55.

Internet Explorer has so many different things wrong with it. I was surprised to find this when I was searching about two letter domain names.