ASP Response Buffer Limit Exceeded
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ASP Response Buffer Limit Exceeded


Article ID: 49084


Updated On:


CA Application Delivery Analysis MTP (NetQoS / ADA) CA Infrastructure Performance CA NetVoyant (NetQoS / NV) CA Network Flow Analysis (NetQos / NFA)




ASP page returns the following error:

500 Internal Server Error


The error has been seen in the following instances:

  • In SuperAgent, this particular error was seen when clicking the Networks link from the Engineering page. Removing the "Friendly Error" checkbox from Internet Explorer's Options allows detailed error messages to appear:

Response object error 'ASP 0251 : 80004005' Response Buffer Limit Exceeded /sa_client_index.asp, line 0
Execution of the ASP page caused the Response Buffer to exceed its configured limit.

  • In Flow Manager 5.2, the error was seen when clicking on the Interfaces link on the left-hand navigation menu. Removing "friendly" HTTP error messages and reloading the page also shows the same Buffer Limit Exceeded message.
  • In RA 8.0 clicking on Administration -> Protocols -> Select a protocol -> All has also shown this error.
  • In NFA 10.0 when adding Interface Filters to Custom Reports

NOTE: This error can be seen on any ASP page. Running the steps below on the server in question will also resolve the issue.



Release: RAIB1H99000-9.1-Network Flow Analysis-Interface Bundle-Hardware


The following doc shows how to increase the ASP limits:


To resolve this issue, follow these steps:

  • How to configure the ASP cache settings for a server

    Open Internet Information Services (IIS) Manager:

    If you are using Windows Server 2012 or Windows Server 2012 R2:

    On the taskbar, click Server Manager, click Tools, and then click Internet Information Services (IIS) Manager.

    In the Connections pane, highlight the name of your server.

    In the server's Home pane, double-click ASP.

    In the ASP pane, expand the Limits Properties section, configure your desired settings, then click Apply in the Actions pane.


    In this specific case, the specific property that you want to increase is the one called:

    Response Buffering Limit

    The default value of this is 4194304

    Let's increase this limit up to:


    Go back to Start - Run, and type in iisreset /start