Configure TFService Account For OData
Navigate to the account that you want to use on https://tfs.visualstudio.com. For example, you may have https://account.visualstudio.com.
In the top-right corner, click on your account name and then select My Profile
Select the Credentials tab
Click the 'Enable alternate credentials and set password' link
Enter a password. It is suggested that you choose a unique password here (not associated with any other accounts)
Click Save Changes