Comments on: Blocked attachments in Exchange (OWA) 2007 http://www.fots.nl/index.php/archive/outlook-web-access-has-blocked-access-to-attachments/ A drop of knowledge Tue, 18 Oct 2011 09:47:15 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: ozboing http://www.fots.nl/index.php/archive/outlook-web-access-has-blocked-access-to-attachments/comment-page-1/#comment-17874 ozboing Wed, 13 Jan 2010 23:28:47 +0000 http://www.fots.nl/index.php/archive/blocked-attachements-in-exchange-owa-2007/#comment-17874 According to http://technet.microsoft.com/en-us/library/bb12423(EXCHG.80).aspx Not all attachments can be unblocked Always Blocked The following files are always blocked by Outlook Web Access, regardless of the file access settings in the Outlook Web Access virtual directory: .mht files. Non-XML file types that contain XML content. If a user tries to open an allowed file type, not an XML file type, that contains any embedded XML, Outlook Web Access will block the file and not allow it to be opened or saved to the user's local computer. Outlook Web Access will block .mht files even if .mht is in the allowed files list. Files that are of the.mht type cannot be opened or saved to the user's local computer. According to
http://technet.microsoft.com/en-us/library/bb12423(EXCHG.80).aspx

Not all attachments can be unblocked

Always Blocked
The following files are always blocked by Outlook Web Access, regardless of the file access settings in the Outlook Web Access virtual directory:

.mht files.

Non-XML file types that contain XML content.

If a user tries to open an allowed file type, not an XML file type, that contains any embedded XML, Outlook Web Access will block the file and not allow it to be opened or saved to the user’s local computer.

Outlook Web Access will block .mht files even if .mht is in the allowed files list. Files that are of the.mht type cannot be opened or saved to the user’s local computer.

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