hi, you can follow the steps as below: step1: Make sure These are not encrypted,such as Step 2, Create a RSA key container, you can use the command :aspnet_regiis -pc "ABeenKeys"–exp Step 3, Modify web.config to identify the key container Step 4 , Encrypt the section of your web.config file > aspnet_regiis -pe "connectionStrings" -app "/connectionTest"