[Solved]Login to Santander Business Bank gives error "Bad Request Your browser sent a request that this server could not understand. "

[A Former User]

A Former User last edited by leocg

Re: Sign On Problems - PNC Bank

Similar problem is now happening to me and my colleague when trying to login to Santander, you can't even open the login page:

https://business.santander.co.uk/

Error: "Bad Request
Your browser sent a request that this server could not understand.
Size of a request header field exceeds server limit."

If we use Edge there's no problem, only with Opera - updated today, but had already had the problem with previous version too.

Version:65.0.3467.62 Opera is up to date Update stream:Stable System:Windows 10 64-bit

[burnout426]

burnout426 Volunteer last edited by

Any difference if you open a private window in Opera and try there?

Any extensions installed? If so, disable them to test if one of them is the cause.

Did you try clearing cookies for santander.co.uk like suggested in the linked thread?

[A Former User]

A Former User last edited by

Problem solved. Thank you so much for your suggestions.

1. Private window: Yes, it worked fine in a private window,
2. Extensions: No, disabled all extensions, no difference.
3. Clearing Cookies: I think it was this that fixed the problem.

I first cleared all cookies, history, and cached images, for the last 7 days - it made no difference.

Then Cleared them for 'all time' - and now the problem was fixed.

I will have my colleague try later, just doing the clear cookies, and see if it fixes the problem for him too.

Thank you again burnout426.