When replying to a comment on a Salesforce Help & Training support case via email, you may receive the following error:
"You currently do not have the ability to provide an email update to this case. If you would like to contribute a comment to the case, please log in to the Help site, locate the case and add your update to it. You can also contact the case owner who can update the case with your comments on your behalf."
This error occurs when the email address used to send the reply does not match the email address registered on your Salesforce Help & Training user account. This mismatch can happen if you have multiple email addresses that forward to the same inbox, or if you have never previously logged in to the Salesforce Help & Training portal.
For details on changing a user's email address in Salesforce, see Edit Users.
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