OWA and opening attachments

I have a native exchange 2003 environment in which I have been using OWA thru a single front end server for 6monthe without issues. We are now replacing some green screens with thin clients from HP and we are using OWA to access email instead of NETMAIl on our main frame. The issue is that when they receive a PDF attachment and they open it they are required to download it to desktop before opening it and for security we have restricted that capability. We even set the pdf to open in browser and it still asks for the download. Any ideas would be greatly appredciated
William_JonesAsked:
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Carol ChisholmCommented:
Try this on Outlook Web Access - Configure Attachment Blocking
http://support.microsoft.com/kb/555001
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William_JonesAuthor Commented:
carolchi;
I review that link and if I read that correctly I don't see PDF listed in either place so wouldn't that mean it was allowed since it was not denied in the Level 1 group or called out in the level 2 group? I see the relation but not sure how that would fix the issue. ???
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imgirCommented:
Is there no file storage on the network for these terminals that you can purge daily? By default IE tries to save to the desktop but you shoul dbe able to redirect it either manually or via GPO. Unfortunately OWA give you no other choice but to save the file to open it.
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Carol ChisholmCommented:
This is a design feature: saving to disk means that your anti-virus software scans the file before it is opened. Depending on your setup your Exchange server will not know how to check the file.

Please see http://support.microsoft.com/kb/952770/en-us.

http://msforge.net/blogs/vlada/archive/2008/04/15/owa-and-pdf-attachments-problem.aspx

But if you reall must I found this, though I have not tried it: ... ...after removing "application/octetstream" from "HKLM\SYSTEM\Current Control Set\Services\MSExchangeWEB\level2mimetypes" PDF files opened with a single click in OWA

http://support.microsoft.com/kb/313730
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William_JonesAuthor Commented:
Unfortunately I had to adjust both settings and GPO but the cure is not 100%
about 10% are still having issues but I am content to treat these as having other issues blocking the fix. The need to lock down is causing strange issues on these thin clients that i don't see on the pc with the same GPO.
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