Outlook 2013 - Attachments not saving on one PC

I’m having some trouble archiving emails into SuiteCRM (7.2.2) using the Outlook plugin (v1.1.0.9).

When I archive an email from my PC at home which contains an attachment, both the email AND the attachment make their into SuiteCRM, as intended.

However, when I try archiving the same email and attachment from my PC at work, only the email makes its way into SuiteCRM.

Can anyone help me troubleshoot this problem as I know the plugin can work perfectly well, just not on my work PC.

Thanks in advance,