In this post we will see how we can Generate MachineKey using Windows PowerShell from our local development machine. Need for speed hot pursuit activation key generator.

1. Generate Machine Key Asp.net Pdf
2. Generate Machinekey Asp.net 4.0

Problem:
Many a times when a ASP.Net application is running on production server, we get an error message stating – “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.” This error happens because of missing machineKey property in the web.config file.

Overview:
The <machineKey> property in web.config file configures algorithms and keys to use for encryption, decryption, and validation of forms-authentication data and view-state data, and for out-of-process session state identification.This encryption prevents tempering of session data on the server. It is present under <system.web> node in web.config file and looks like below –

Install putty windows 7. N.B: Do not use this machineKey on your production servers. Instead follow the steps mentioned below to generate a new one only for you.

Have you ever needed to generate a MachineKey to use in your application’s configuration file or in machine.config? You may need a MachineKey in several scenarios. One of them is the scenario where you deploy your application in a web farm. One another scenario is to need to encrypt Forms Authentication tickets. You have some July 31, 2012. Jul 31, 2012  ASP.NET automatically generates a cryptographic key for each application and stores the key in the HKCU registry hive. This auto-generated key is used if there is no explicit machineKey element in the application’s configuration.

The base machine key is stored in the registry in the following location: HKCUSoftwareMicrosoftASP.NET4.0.30319.0AutoGenKeyV4 Note that this key sits in the HKEYCURRENTUSER hive, so the generated machine key belongs to.

Solution:
We will use a PowerShell script to create this machineKey. Here’s the Powershell Script

Generate Machine Key Asp.net Pdf

Dec 04, 2006 By default, the validationKey used to create the MAC is randomly generated by ASP.NET when the application pool starts up. This ensures that the validation key is unique and changes periodically. However, since the key is different from server to server, if you're viewing a page on Server A and post it to Server B. Have you ever needed to generate a MachineKey to use in your application’s configuration file or in machine.config? You may need a MachineKey in several scenarios. One of them is the scenario where you deploy your application in a web farm. One another scenario is to need to encrypt Forms Authentication tickets. You have some July 31, 2012.

You can save this PowerShell script as “generateMachineKey.ps1” on your hard disk. Now open Windows Powershell and perform the following steps –

• Go to the folder where you have stored the .ps1 file
• Load the Script
• Call the PowerShell Function

This will give you a new machineKey. You can copy this and paste it on to your web.config file now.

Hope you like this post.

Generate Machinekey Asp.net 4.0