Customers see blank screen when they login from their site.

We have a client who gets a blank screen when they login as a customer.  We can use the same customer login from other locations and have no issues.  

This is JIRA Service Desk online.  Client is using IE v10.  Will test other browsers and report back.  


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Issue was resolved by 'IE Compatability Mode'.  Other browsers worked fine with client.  

Normally when users have similar problems with our instance its a local browser problem.

Try another browser like firefox, if thats work try resetting the IEv10 (better keep on using firefox ;) )

If only clients could be so choosy. :)  Darn IT policy restrictions.

A blank page (HTTP 400) is normally because the client is sending a header larger that the server is configured to allow. 

If the header is larger than what is allowed, then the server simply cannot make sense of the data, presenting a blank page to the user.

Because cookies etc will make the header grow, you can observe that it works in IE, while it doesn`t in FF. You will then think that it`s a browser issue, while in fact it not. 

In the case it is a HTTP 400 you will need in increase the maxHttpHeaderSize and the equivalent also in any reverse proxy in front. 

Here is what Altassian says:



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