Set enableViewStateMac to false or specify when using a web farm in a stateless load balance.

  Using enableViewStateMac requires that successive requests be forwarded to the same server (i.e. server affinity).  This feature is used to help prevent tampering of a page’s view state; however, it does so based on an auto-generated validation key on the current server.  From this key, a message authentication code (MAC) is generated and sent in the…

Increasing the maximum request length for an HTTP request in ASP.NET.

There are many times where the default maximum for an HTTP request in ASP.NET is not suitable.  One can go into their web.config or machine.config and change the value for maxRequestLength. Visit for more details.