- Open your IIS Manager from Administrative tool -> Internet Information Services Manager.
- In Connection pane on left side of window, click on the website.
- Double click on Machine Key icon as shown below.
- You will see Machine key page, default encryption method is SHA1, you can change it from dropdown list as shown.
- Click on Generate Keys from Actions pane from left side of IIS window as shown.
- Message will be shown on Alerts pane, “The changes have been successfully saved.”
- Open your Web.Config file, you will find the
1<machineKey>1<<strong>system</strong>.web>