Cannot send a new email or forward emails

When I try to send a new email or forward a email I get the following error “File”/" couldn’t be added as attachment due to the following error: Access to path ‘C:’ is denied"  And I am not even trying to add an attachment .

Hi Mark, is it possible you’re using a signature with included image in the signature, or that the message you’re trying to forward contains a signature with image included?
What version of eM Client are you currently using on your computer, can you check for the exact version number in Help > About?

Can you please make a screenshot of the issue?

Thank you,
Paul.