Hi marcelr,​ Thanks for reaching out to us. Yes, this is an issue. Trying to attach a PDF from shared network/folder, Adobe Reader/Acrobat throws error if the default email client is Outlook. This issue does not occur if the default email client is Mail. For a workaround you can change your default email client on your Mac from Outlook to Mail and then try the workflow. We have added this issue into our backlog, will inform you once we plan to deliver the fix. Regards, Arvind
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