Fixing INVALID LOGIN in Salesforce ERROR: Unable to log into Salesforce Invalid username, password, security token; or user locked out. (Error code: INVALID_LOGIN) Error details: The Salesforce password you specified has expired. Please change the password and update the Set Up configuration with the new password. You will also need to update the security token if the password is changed. First, we will need to identify the factors that might have caused this: Updated the Salesforce credentials such as Password and/or Security Token yet did not update in Step 1 of the Set Up. Updated the Password but still using the old Security Token. Edited the new credentials in Step 1 of the Set Up but still errored out. Salesforce Password has expired. Alternatively, you can use "Oauth2" as the Authentication type so that you don't need to manually look for the security token, we'll automatically detect it for you. Important reminder: Passwor d is tied up with your Security Token. Please note that when you update your Salesforce Password, the NEW Security Token will be sent by Salesforce to your email. So when you edit your password in Step 1, it is crucial to also enter the new Salesforce Secu rity Token or reconnect using the "Ouath2" authentication type. How to fix: Step 1: Edit Salesforce Credentials in Step 1 of the Set Up with the new Password and/or Security Token. Remember to DISABLE any of your browser's PasswordSafe or any Password programs and re - edit. Step 2: If the above - mentioned steps do not work, then try to open edit it on your browser INCOGNITO/PRIVATE mode browser.