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Kiwi Syslog Web Access Server error: System.Web.HttpUnhandledException

This article provides steps to resolve the following error on the Kiwi Syslog Web Access after upgrading to 9.6.7.1: Exception of type 'System.Web.HttpUnhandledException' was thrown.

First published date

11/29/2018 10:40 PM

Last published date

6/21/2022 6:11 AM

Overview

After upgrading to version 9.6.7.1 or 9.8.x, you might receive the following error on Kiwi Syslog Web Access: 
Exception of type 'System.Web.HttpUnhandledException' was thrown. Status Code: 500 System.Web.HttpUnhandledException: Exception of type 'System.Web.HttpUnhandledException' was thrown. ---> System.NullReferenceException: Object reference not set to an instance of an object. at _Event.Page_Load(Object sender, EventArgs e) at System.Web.UI.Control.OnLoad(EventArgs e)

Product section

Kiwi Syslog Server

Cause

The error occurs due to the conflict between the old and new versions of the web-server (UltiDev & IIS)

Resolution

  1. Stop the Kiwi Syslog Server service (see https://support.solarwinds.com/SuccessCenter/s/article/Start-Stop-Kiwi-Syslog-Server?language=en_US).
  2. Stop the "Kiwi Web Access" site in IIS manager
  3. Open the following directory:

    C:\Program Files (X86)\SolarWinds\Kiwi Syslog Web Access\html\App_Data\

  4. Move all the Event.sdf files that are saved with Event#.sdf naming convention (Event1.sdf,Event2.sdf...) to an alternate location.
    • Note: Do not move the Systems.SDF and the Event-Blank.sdf files
  5. Right-click and copy Event-blank.sdf into the same folder.
  6. Rename the copy to Event.sdf. (Do not rename the original Event-blank.sdf but leave this file in the same folder).
  7. Start the Kiwi Syslog Server service.
While moving the .sdf files, if you notice a "File in use..." error by w3wp.exe process, this means that SDF files are in use by Kiwi Web Access and the Kiwi Syslog processes. You can fix this, by stopping both. Else, by Ending the process IDs using the Syslogd process via Task Manger > Open Resource monitor > CPU > Search for "Kiwi" > End the processes (Refresh).