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abecerra
Level: Powered On

Error 400. The size of the request headers is too long

Hello Guys

 

Currently, I'm having issues connecting to a Sharepoint list. When I define the data source and set a field as visible I get the following error:

 

 WebAuthoring abnormal termination.
Client date/time: 2016-12-13T04:06:07.822Z
Version: 2.0.562
Session ID: 0a64cf4c-5cfa-2282-922c-7274620a32af
errorMessage: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN""http://www.w3.org/TR/html4/strict.dtd">
<HTML><HEAErD><TITLE>Bad Request</TITLE>
<META HTTP-EQUIV="Content-Type" Content="text/html; charset=us-ascii"></HEAD>
<BODY><h2>Bad Request - Request Too Long</h2>
<hr><p>HTTP Error 400. The size of the request headers is too long.</p>
</BODY></HTML>

 

Sometimes I do get additional information like 

 

callStack: Core.ApplicationError: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN""http://www.w3.org/TR/html4/strict.dtd">
<HTML><HEAD><TITLE>Bad Request</TITLE>
<META HTTP-EQUIV="Content-Type" Content="text/html; charset=us-ascii"></HEAD>
<BODY><h2>Bad Request - Request Too Long</h2>
<hr><p>HTTP Error 400. The size of the request headers is too long.</p>
</BODY></HTML>

at error (https://paaeaucdn.azureedge.net/studio/js/AppMagic.WebAuthoring.js?v=39dbcefc99d0:1117:45)
at notifyError (https://paaeaucdn.azureedge.net/studio/openSource/modified/winjs/js/base.js?v=39dbcefc99d0:2062:25)
at state_error_notify.enter (https://paaeaucdn.azureedge.net/studio/openSource/modified/winjs/js/base.js?v=39dbcefc99d0:1754:21)
at _run (https://paaeaucdn.azureedge.net/studio/openSource/modified/winjs/js/base.js?v=39dbcefc99d0:1921:17)
at _chainedError (https://paaeaucdn.azureedge.net/studio/openSource/modified/winjs/js/base.js?v=39dbcefc99d0:1884:13)
at error (https://paaeaucdn.azureedge.net/studio/openSource/modified/winjs/js/base.js?v=39dbcefc99d0:1589:25)
at notifyError (https://paaeaucdn.azureedge.net/studio/openSource/modified/winjs/js/base.js?v=39dbcefc99d0:2062:25)
at state_error_notify.enter (https://paaeaucdn.azureedge.net/studio/openSource/modified/winjs/js/base.js?v=39dbcefc99d0:1754:21)
at _run (https://paaeaucdn.azureedge.net/studio/openSource/modified/winjs/js/base.js?v=39dbcefc99d0:1921:17)
at _error (https://paaeaucdn.azureedge.net/studio/openSource/modified/winjs/js/base.js?v=39dbcefc99d0:1894:13)

 

Please help!

3 REPLIES 3
Power Apps Staff yudhvirc
Power Apps Staff

Re: Error 400. The size of the request headers is too long

Thanks for reporting this issue. We are investigating it.

Microsoft Mita_Garg
Microsoft

Re: Error 400. The size of the request headers is too long

Am having the exact same issue. Is there any update on this reported issue?

Microsoft abhigup
Microsoft

Re: Error 400. The size of the request headers is too long

This is currently a known issue and we are working to provide a fix for it soon.

For the time being, please use PowerApps studio (windows Client) instead of PowerApps web if you encounter this issue.

Thanks.

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