There was another thread showing this but the answer provided does not seem to apply. Exchange 2010 SP1 running as virtual system on Server 2008 R2. 4 cores, 12 GB of RAM, 60 GB of free disk space. Had an e-mail come in addressed to 2 different people and neither showed the attachment. Forwarded e-mail to my account. Using Outlook 2010 on all systems. The forwarded mail shows as an attachment of 3MB but when I open it, it is just the message with no attachments. Open my Outlook Web App and the same e-mail now shows the attachments. I believe the fact that 3 different accounts show the same result eliminates the possibility of corrupt Outlook profiles. Have rebooted the Exchange server with no change. Any help would be appreciated! Thanks, Eric

Hi all : Do you have something to update ?

Hi, I'm having the same issue with Exchange 2007 and Outlook 2010 after applying SP3 to exchange. Attachment is definitely allowed as this was PDF. So far it was seen by 3 of my users. when you see an email in the inbox, the icon shows the message is with attachment, but when you open the message or forward it, no attachments are present. Still if you go to OWA and forward this email then, attachments are included in the message. Thanks, MarcinMarcin Dobija | MCSE:Security | MCITP:DBA,EA,EMA,SA | MCDBA | MCTS:W2k8,E2k7,SQL2005,OCS,ISA,Vista | MCITP Dynamics:CRM4 | MS ITAC Member | VCP4

Same issue Exchange 2007, Outlook 2010. PDF's are allowed. Sometimes PDF come through sometimes they don't. OWA works if you logon and forward, still can't open atttachment via OWA unless you forward.

I'm having the same exact issue as JoeCA12. I have a user that sometimes gets a PDF attachement and sometimes doesn't. If she forwards the message to GMAIL she is able to download the attachment and even resend it to someone. The attachment shows in OWA but not able to download. I am able to see it also through Active Scyn on Android phone. I tried the registry suggestions but no luck. Any other suggestions?Dave

See post below. http://blogs.technet.com/b/exchange/archive/2011/04/21/mixed-ing-it-up-multipart-mixed-messages-and-you.aspx Sukh

I have seen this exact same problem with my work PC running Office 2010, previously had 2007 and had the same issue with a server running exchange, and also my home PC which is stand-alone running Office 2007. The type of attached file is irrelevant. It can be a pps or pdf or a picture, whatever. Sometimes I will get an email and I can see from teh size that there should be an attachment but there is nothing shown. Forward it to anyone else and they see the attachment. It can't be setting because it should then happen with ALL attachments on that type which is not the case. I will receive 2 emails on the same day both with pdf attachments. One I can see, one I can't. I have even had a case where I forwarded the email to my Gmail account and then forwarded it back to my Outlook account and then I could see it! This is a bug in Outlook.