I am running Outlook 2013 and Windows 8.1, on a recent Dell PC.

Last week, most Outlook attachments started to arrive corrupted. This includes PDFs, PPTXs, JPEGs; for example, with a PDF I get the message:



'Adobe Reader cannot open XXX because it is not a supported file type or the file is damaged...'

I took the computer to my local dealer and they found the same problem when my PC was connected to their network/ISP. They troubleshooted Outlook but found no problems. They set up my Outlook account on their own PC and still got the problem, and they are suggesting the fault lies with Apple's .me system working with Outlook.

I can receive files OK on my iPad..

Has anyone seen or heard of a similar problem?

Thanks