If you are administering a Microsoft IIS SMTP server, you must enable Basic Authentication by going here: IIS Manager > local computer > Default SMTP Virtual Server > Properties > Access tab > Authentication > Basic Authentication > (checked) Gmail and Microsoft are now requiring OAuth authentication in many cases. thank you guys for your response! I was able to fix the issue by changing the "-d" to "--data-urlencode" I think my username / password / client / secret values contain characters that need to be encoded. Also, I tried to do this with a standard user and a community user. The standard user makes use of securty token. To perform Startup Repair on your computer to try and fix this issue, you need to: On the Windows 10 login screen, click on the Power button in the bottom-right corner. While holding down the Shift button, click on Restart. When your computer boots up, it will display a screen with three options. Click on Troubleshoot. Click on Advanced Options. Invalid Username/Password Problem in DigiboxxCredentials which you entered does not match with our records #digiboxx----- Rename-Computer -NewName "NEW-PC-NAME", where you have to replace NEW-PC-NAME with the name you want to change and press. After the command is run successfully, you will see The changes will take I am using the API for WSDL when using the Login method gives me the error, "INVALID_LOGIN: Invalid username, password, security token, or user locked out." I am using "Salesforce.com Enterprise Web Services API Version 44.0" version. qxAuMDM.

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