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Add a specific machine key to the machine.config...<br />
<a href="http://support.microsoft.com/default.aspx?scid=kb;en-us;555353&sd=rss&spid=6351" rel="ugc">http://support.microsoft.c<wbr />om/default<wbr />.aspx?scid<wbr />=kb;en-us;<wbr />555353&amp;sd=<wbr />rss&amp;spid=6<wbr />351</a> <br />
-MJC<br />

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Add a specific machine key to the machine.config...
http://support.microsoft.com/default.aspx?scid=kb;en-us;555353&sd=rss&spid=6351 [http://support.microsoft.com/default.aspx?scid=kb;en-us;555353&sd=rss&spid=6351]
-MJC


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I have tried with specific machine key. No joy. Is there anything that we can do apart from this to resolve the problem?
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I have tried with specific machine key. No joy. Is there anything that we can do apart from this to resolve the problem?

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we have 3 different physical servers(Windows 2000 SP4) and running throu loadbalancer. Now we are trying to add 3 more server to the web farm.<br />
we getting the following error message across all the servers<br />
System.Web.HttpException : Invalid_Viewstate<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Client IP: 74.129.1.13<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Port: 2913<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 4.0)<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ViewState: dDwzOTA4ODc5NDQ7O2w8YnRucH<wbr />JvZHVjdFJl<wbr />cG9ydEhlbH<wbr />A7YnRuRmlu<wbr />ZFByb2R1Y3<wbr />Q7Pj4k3GRY<wbr />hNOtET0wNJ<wbr />mstDjOFAV3<wbr />pw==<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Http-Referer: <a href="http://csdv5.tsl/CSDUserInterface/RetrieveLocationId.aspx" rel="ugc">http://csdv5.tsl/CSDUserInterface/RetrieveLocationId.aspx</a><br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Path: /CSDUserInterface/Home.asp<wbr />x. : System.Web : &nbsp;
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we have 3 different physical servers(Windows 2000 SP4) and running throu loadbalancer. Now we are trying to add 3 more server to the web farm.
we getting the following error message across all the servers
System.Web.HttpException : Invalid_Viewstate
	Client IP: 74.129.1.13
	Port: 2913
	User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 4.0)
	ViewState: dDwzOTA4ODc5NDQ7O2w8YnRucHJvZHVjdFJlcG9ydEhlbHA7YnRuRmluZFByb2R1Y3Q7Pj4k3GRYhNOtET0wNJmstDjOFAV3pw==
	Http-Referer: http://csdv5.tsl/CSDUserInterface/RetrieveLocationId.aspx
	Path: /CSDUserInterface/Home.aspx. : System.Web :  

Invalid_Viewstate

IIS is Internet Information Services, the web server included with Windows Server operating systems. All current versions are built on a modular architecture; modules can be added or removed individually so that those required for specific functionality are installed. The full installation of IIS includes HTTP, security, content, compression, caching, logging and diagnostics.

Microsoft IIS Web Server

Windows 2000 is an operating system for use on both client and server computers. It is the successor to Windows NT 4.0, and is the last version of Microsoft Windows to display the "Windows NT" designation. Four editions of Windows 2000 were released (Professional, Server, Advanced Server, and Datacenter Server) that shared a core set of features, including many system utilities such as the Microsoft Management Console. All versions of the operating system support NTFS 3.0, Encrypting File System, as well as basic and dynamic disk storage. The Windows 2000 Server family includes support for Active Directory services, Distributed File System and fault-redundant storage volumes.

Windows 2000

Web applications are systems that run in browsers that perform functions normally associated with other client-based programs. One of the most commonly used web applications is email; instead of downloading individual emails to a local machine, the data is shown through a website. Other examples of web applications are collaborative systems like a wiki or an online game.