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gottchilds
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Tuesday, February 10th, 2026 10:42 PM

400 bad request on chrome

I keep getting this "400 Bad Request Request Header Or Cookie Too Large" error on Chrome. I have cleared the cache and cookies multiple times.

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2 hours ago

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XfinityThomasA

Official Employee

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3.3K Messages

2 months ago

 

Hello, gottchilds! Clearing cache and cookies is a great first step. Are you having this issue on just one device or are others impacted? What happens when you try using another web browser?

 

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user_2syayi

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All devices are now impacted.   I cant look at my plan on the app or on the website.  I cant look at it on my laptop either.  

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6 days ago

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XfinityOrlandoM

Official Employee

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3.2K Messages

@user_2syayi

Thanks for reaching out to us, you may want to try clearing your caches and cookies and also resetting your default Internet settings.

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

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4 days ago

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ibamountaineer

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3 Messages

30 days ago

This is a Xfinity problem.  Search the web and you will find numerous posts about this problem.  For an internet service provider xfinity has a miserable website and connection.  Constant proble they try to blame on peoples computers.  Funny how you do not have this problem with other websites--just xfinity.

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user_1xshxj

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2 hours ago

I am also experiencing this issue, on every browser with the xfinity website.

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