Generate Machine Key Asp Net 4.0

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Sep 26, 2019  Describes view state and how to resolve message authentication code (MAC) errors. Skip to main content. Microsoft Support. Each server in the farm will generate its own local key, and none of the servers in the farm will agree on which key to use. To scaffold the appropriate registry keys for an ASP.NET 4.0 application pool. Aug 06, 2012  Home IIS.NET Forums IIS 7 and Above Setup Load Balance Machine Key. Load Balance Machine Key. The developers are developing an application that requires a login so I also set the Machine Key. I've tried various options but definitely using the 'Generate a unique key for each application' and then copying the settings to the other server. The all-in-one ultimate online toolbox that generates all kind of keys! Every coder needs All Keys Generator in its favorites! It is provided for free and only supported by ads and donations.

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 options to generate a MachineKey:

  • You can build the sample application from the following article: http://support.microsoft.com/kb/312906
  • You can search in Bing for 'MachineKey generator' and use an online service. Honestly I wouldn't rely on third party online services for generating MachineKey because I wouldn't have any control over them and I couldn't make sure that if they wouldn't log my IP address and MachineKey in a database to use that later - yes, I know it sounds like 'paranoia' :)

How to generate machineKey in web.config using wix? Ask Question Asked 4 years, 1 month ago. Generate the Machine Key: You will need to implement a custom action to generate the Machine Key. ASP.NET Web Site or ASP.NET Web Application? 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. May 13, 2009 The machineKey element of the ASP.NET web.config specifies the algorithm and keys that ASP.NET will use for encryption. By default the validationKey and the decryptionKey keys are set to AutoGenerate which means the runtime will generate a random key for use. This works fine for applications that are deployed on a single server. This tool will generate a valid random machine key used by ASP.NET for encryption, decryption, validation of forms-authentication and view-state data, and other purposes. Select your target version of ASP.NET and click the Generate Keys button. Monster hunter generations ultimate key quest guide 3 stars.

There is one another way which I have learned from one of my customers today. It was over there waiting in IIS user interface but I never gave it a try before (shame on me). You can use IIS 7.5 user interface to generate the MachineKey section and save it in the web.config of your application / root web.config file. Steps are quite easy:

1) Open IIS manager.

Asp.net 4.0

2) If you need to generate and save the MachineKey for all your applications select the server name in the left pane, in that case you will be modifying the root web.config file (which is placed in the .NET framework folder). If your intention is to create MachineKey for a specific web site/application then select the web site / application from the left pane. In that case you will be modifying the web.config file of your application.

3) Double click the Machine Key icon in ASP.NET settings in the middle pane:

4) MachineKey section will be read from your configuration file and be shown in the UI. If you did not configure a specific MachineKey and it is generated automatically you will see the following options:

5) Now you can click Generate Keys on the right pane to generate random MachineKeys. When you click Apply, all settings will be saved in the web.config file.

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There are few scenarios that you want to add MachineKey into your web application’s web.config:

  1. You have a web farm and in each server the machine.config set to auto generate machinekey.
  2. You want to use “Encyrpted” password format in ASP.NET membership provider.
  3. You get intermittent error of “Validation of viewstate MAC failed….”

To fix problem #3, you can also set one of all these in the <page settings:

Ruby On Rails

<page enableEventValidation=”false” viewStateEncryptionMode=”Never” enableViewStateMac=”false”

However you have to be aware of the risk of this change, as it opens door for ViewState value tampering. (Joteke has an intersting finding on large pages having gridview control. Basically in this case, you have to set above values for avoid the error, which is casued by the position of a hidden field containing some encrypted information.)

Here are 2 online tools to generate the random machine key for you: this and this. A sample MachineKey node:

Asp 4.0 Download

<machineKey
validationKey=”56AB7132992003EE87F74AE4D9675D65EED8018D3528C0B8874905B51940DEAF6B85F1D922D19AB8F69781B2326A2F978A064708822FD8C54ED74CADF8592E17″
decryptionKey=”A69D80B92A16DFE1698DFE86D4CED630FA56D7C1661C8D05744449889B88E8DC”
validation=”SHA1″ decryption=”AES”
/>

Example Asp.net

The <machineKey> should be put inside <system.web> section.

Generate Machine Key

Please refer to MSDN for documentation: syntax and overview.

Generate ssh public key from private key. Make sure you select all the characters, not just the ones you can see in the narrow window. If a scroll bar is next to the characters, you aren't seeing all the characters.