Hi All
We have two IIS web server 7.5 version running on windows 2008 R2 along with NLB cluster configured for Load balancing with two servers. Currently we are facing some issue with one server serve the request and other one server was dropped the request.
While we trying to access the website below error we are getting ,but some of the user website working through some other web server.
Error getting while trying to access the page like
“validation of view state MAC failed.if this application is hosted by a web farm or cluster ,ensure that <machine key>. configuration specifies the same validation key and validation algorithm Auto Generate cannot be used in a cluster”.
refer the Link id=314005(https://support.microsoft.com/en-in/help/2915218/resolving-view-state-message-authentication-code-mac-errors).
How to capture and check the logs in both IIS and NLB .
Kindly help me to this issue ,How to resolve the issue without impacting our production environment.
Thanks and Regards