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Request requires buffering data to succeed error when exporting with WebDAV enabled


QAID # 16587 Published

Question / Problem:

I am using the SharePoint 2010 Export Connector v8.3 R2 and have checked "Use WebDAV (recommended for large files)" on the General Settings tab.

When attempting to export, I receive an error message similar to the following as reported in the Capture error log:

2012-06-13 11:53:13, 0x00000018, 0, 0x00000000, 0x00000000, 0x00000000, C:\Program
Files (x86)\Kofax\CaptureSS\ServLib\Bin, Kofax Capture Export, 8RK8RC1:Sess 1,
10.00.2848, Kofax.TAPCommon.TAPLib:Kofax.SharePoint.Export.Release.ReleaseDoc, 0, This
request requires buffering data to succeed.

This error is occurring on any size file upolad.

Answer / Solution:

This error occurs when Kerberos is not configured on the network running the SharePoint server.

There are two possible solutions for this error:

  • The following steps should be tried first at the SharePoint site:
    1. At the SharePoint server, Central Administration, navigate to Application Management - Web Applications Management.
    2. On the Web Applications tab, select the name of the Web Application in question.
    3. Select Authentication Providers then select Default.
    4. Scroll down to IIS Authentication Settings.
    5. If Kerberos is NOT configured for this system, then select NTLM and click Save.
  • If the above steps do not resolve the issue, or making the change at the SharePoint site is not feasible, you can override the Export Connector setting by adding
    <PreAuth>Disabled</PreAuth> to the KCEC-SP config file. This config file will need to be manually created. The config XML file can be placed in any of these two paths (if both exist, the first one takes precedence):
    • %APPDATA%\Kofax\KEC-SharePoint\Config.xml
    • <KCServerPath>\Config\KEC-SharePoint.xml

Below is an example of the configuration file:

<?xml version="1.0" standalone="yes" ?>

Documentation for the configuration file can be found in the Kofax Export Connector for Microsoft SharePoint Administrator's Guide, beginning on page 12.

Applies to: 

Product Version
KEC-Sharepoint 8.3