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Maximum Request Length Exceeded for KCN Server Remote Site Synchronization

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KCN Server Remote Site Synchronization error:

Maximum Request Length Exceeded

When processing batches from a Remote Site to a Central Site, then an error is shown in the ACIW Logs and the Batch is not uploaded to the KCN Server. 

System.Web.HttpException (0x80004005): Maximum request length exceeded

Why is this error encountered on the Remote Site server when sending batches to the Central Site?


These errors are related to limitations with IIS and Windows.


The error message indicates there is a limitation for the Maximum Request Length, an IIS configurable setting.

The full error is as follows: 

System.Web.HttpException (0x80004005): Maximum request length exceeded.
at System.Web.HttpRequest.GetEntireRawContent()
at System.Web.HttpRequest.get_InputStream()
at Kofax.ACIS.IISForwarder.Post.PostFile(HttpContext oClientContext, String strFilePath, Int32 nACICacheID)
at Kofax.ACIS.IISForwarder.Post.ProcessRequest(HttpContext oClientContext)

Steps to resolve:

  1. Review the Web.Config file for the ACI web site and effect changes, as follows: 
    1. maxRequestLength executionTimeout IIS Settings: IIS6 and IIS7 are capped at 4MB by default, which can be extended by adding or modifying the value.  Under the system.web section, add the line: 
      <httpRuntime maxRequestLength="204800" executionTimeout="600"/>

      The value of maxRequestLength is in kilbytes; executionTimeout is in seconds.  
    2. maxAllowedContentLength IIS Setting: IIS 7 and IIS8 introduces an additional constraint, also configurable in the web.config file by adding a new section (See Tip), or modifying the values: 
      <requestLimits maxAllowedContentLength="209715200"/>

      The value of maxAllowedContentLength is in bytes


      <requestLimits maxAllowedContentLength="209715200"></requestLimits>

Level of Complexity 



Applies to  

Product Version Build Environment Hardware
Kofax Capture





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Article # 3041778
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