我如何登录到 API 呼叫具有多重身份验证的 Salesforce？

Question

I have started using MFA in Salesforce. I can successfully configure the setting "Multi-Factor Authentication for User Interface Logins" and use the Salesforce Authenticator app.

I have now enabled "Multi-Factor Authentication for API Logins", but in my C# app, the user enters Username, Password and Security Token and

I login to Salesforce via the following code:

   SFService = new SalesForceEnterpriseService.SforceService() { Timeout = 80000, Url = 
        "https://login.salesforce.com/services/Soap/u/52.0"};                               
   LoginResult  result = SFService.login(Username, Password + Token);

But now i get the error:

 INVALID_LOGIN: Invalid username, password, security token; or user locked out.

But i assume it is due to the MFA.

How can i now login a user if MFA is enabled in API logins and will i be able to make other API calls like getting Entity fields?

Answer 1

No, it's not MFA. Go to FAQ , search for "API" and it clearly says MFA is not required.

Do you use normal Salesforce username and password or do you have Single Sign On enabled? API logins need SF credentials (or you can use an OAuth2 flow where human sees the SSO login page, types passwords there and then is taken back to your app. Entering SSO password directly to your app & logging in with SOAP won't work)

Go to your user's login history and view most recently used IP (and/or go to whatismyip.com). Go to Setup -> Network Access and add that IP to trusted ranges. This will mean you don't need security token anymore. Check if just username and password works better, maybe there were typos or it's an old token.