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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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10 days ago

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XfinityThomasA

Official Employee

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3.4K 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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19 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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17 days ago

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ibamountaineer

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3 Messages

1 month 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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1 Message

13 days ago

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

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user_fd504c

Visitor

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4 Messages

12 days ago

same here, so tired of this error and having to call them and be on the phone for hours

no problems on other websites

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XfinityOrlandoM

Official Employee

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3.2K Messages

@user_fd504c

Thanks for reaching out to us, we recommend clearing your caches and cookies and also going into your settings and going to the “reset setting” option and click on “restore setting to their original default’s”.

 

Also try using incognito/private mode to see if the error is caused by browser extensions.

 

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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10 days ago

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