Microsoft Outlook – How to unblock a file extension that Microsoft Outlook (Office 2007) won’t allow to be read or sent

You can define what outlook blocks or does not block by using this registry key

[HKEY_CURRENT_USERSoftwareMicrosoftOffice12.0OutlookSecurity]

“Level1Remove”=”.mdb;.zip;.exe;.url;.reg;.app”

Add to “Level1Remove” all extensions you do not want Outlook to block.

See the following article for more detail.

http://support.microsoft.com/kb/829982

Please follow and
Read the rest