Hi, I used to have MS Outlook as my default eMail client. After I changed the default to MozillaThunderbird I get the following message every time I run the on-demand scanner: quote MICROSOFT OUTLOOK Either there is no default mail client or the current mail client cannot fullfil the messaging request. Please run Microsoft Outlook and set it as the default mail client. unquote After clicking on OK the window disappears and the on-demand scanner runs as usual. I have disabled notification via SMTP in Nod32 so I wonder what this messaging request might be, and how Outlook gets into it. Thanks. PS: I tried to insert the message as jpg or gif file, but could not figure it out. Where can I get advise?