System.Web.HttpException:验证视图状态MAC失败.

我正在asp.net中开发Web应用程序
我从最近两天开始面临问题.虽然我在web.config文件中做了一些更改.

我遇到以下错误:
System.Web.HttpException:验证视图状态MAC失败.

完整说明:
验证视图状态MAC失败.如果此应用程序由Web场或群集托管，请确保< machinekey>配置指定相同的validationKey和验证算法.自动生成不能在群集中使用.

我确实在互联网上搜索，但没有找到解决方案.

谁能帮我吗

Hi,

I m developing web application in asp.net
I m facing problem from last two days. while i have some changes in web.config file.

I have got the following error:
System.Web.HttpException: Validation of viewstate MAC failed.

full discription:
Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that <machinekey> configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.

I did search on internet, but I am not getting the solution.

Can anyone help me please

thanks in advance.