error authenticating with auth code due to: grant type not supported

error authenticating with auth code due to: grant type not supported


Aug 31, 2021
featured image

You are trying to log in through an instance URL (example: sandbox) and you do this.

      
sfdx auth:web:login -a myusername@myorg.sandbox --instanceurl=https://mysandbox-domain.lightning.force.com

And you get this error in console:

In your browser you get this

image

The problem is you are using lightning.force.com domain instead of my.salesforce.com

      
sfdx auth:web:login -a myusername@myorg.sandbox --instanceurl=https://mysandbox-domain.my.salesforce.com


salesforce sfdx cli