Verifying the view status Mac failed (validation of viewstate Mac failed)

After the ASP. NET site is published, the following error occurs: "An error occurred while verifying the view status Mac. If this applicationProgramIt is carried by the Network farm or cluster. Make sure that the same validationkey and verification are specified in the configuration.Algorithm. Autogenerate cannot be used in a group ".

 

1. Cause
   ASP. NET runat = 'server' encrypts viewstat on Mac, so that only the same page can be submitted for data.
2. Solution

• Add @ page enableviewstatemac = "false" to the receiving page"
  Or enableeventvalidation = "false" viewstateencryptionmode = "never"
• Of course, you can also add the following to the Web. config node:
  <System. Web>
  <Pages enableeventvalidation = "false" viewstateencryptionmode = "never"/>
  </System. Web>