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

Is there any firewall hardware on your local network? What is kind of your attachment? Can you receive the same attachment which is compress by zip or winrar ? Special format attachment will be blocked by outlook or firewall. It is the way to receive special file by outlook. 1. Make sure Outlook is closed. 2. Open your registry editor by opening the Run command and type regedit (regedt32 for Windows 2000). In Windows Vista and Windows 7 you can also directly type regedit in the Start Menu’s Search box. 3. Locate the following key § Outlook 2000 [HKEY_CURRENT_USER\Software\Microsoft\Office\9.0\Outlook\Security] § Outlook 2002 [HKEY_CURRENT_USER\Software\Microsoft\Office\10.0\Outlook\Security] § Outlook 2003 [HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Outlook\Security] § Outlook 2007 [HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Outlook\Security] § Outlook 2010 [HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Outlook\Security] 4. Go to Edit-> New-> String Value and name the value Level1Remove (case sensitive!) 5. Double-click on the newly created value and enter the extension including the "dot" that you want to open in Outlook. For instance .exe If you need to enter more than one extension you'll have to type separate them by a semicolon like this; .exe;.bat;.url 6. Press OK on the input box and close the registry editor 7. When you open now Outlook, the attachments which hold those extensions aren't blocked by Outlook anymore. To let Outlook block those extensions again follow the instructions again but instead of creating the Level1Remove value delete it. Another way is to move this mailbox to another database. Maybe there is little corruption in this database.

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