400 Bad Request – “Request Header Or Cookie Too Large” when accessing “Manage” s

[RKYadav]

Hi all,

I’m facing a persistent issue on the EE website after logging in.

Issue summary

• Login to ee.co.uk works successfully

• I can access my profile without any problem

• However, when I click on “Manage” (to view my existing products), I get the following error:

400 Bad Request
Request Header Or Cookie Too Large
nginx

This effectively blocks access to my account details and defeats the purpose of logging in via the web portal.

What I’ve tried

• Cleared cookies, local storage, and session storage

• Tried a fresh login

• Issue still persists in the same browser session

• Tested in incognito mode → works fine

• EE mobile app works without any issues

This suggests it may be related to cookie/session handling or SSO/auth state in a normal browser session.

Support experience

• Called 150 technical support

• Was advised to get call on another number due to OTP not coming while on call on another SIM

• It’s been over 6 hours and I haven’t received any callback yet

Ask

Has anyone else experienced this issue recently?

Is there a known problem with EE’s web authentication or cookie handling?

Any workaround (other than using incognito every time) would be helpful.

Thanks.

[RKYadav]

Screenshot

[XRaySpeX]

Have you tried just refreshing when you get that msg?