Outlook 2013 XLS Attachments cannot be opened in Excel 2013 due to Trusted Center restrictions with Outlook Secure Temp Folder
Dear all,

I'm having some serious issues with Office 2013's Trusted Center settings. In Outlook 2013 XLS Attachments cannot be directly opened in Excel 2013 with double-clicking due to Trusted Center restrictions for Excel 2013 regarding Outlook's Secure Temp Folder. I tried to adjust the corresponding Office 2013 Administrative Template within my GPOs but to no prevail.

I did find out that Outlook 2013 places an attachment within the Outlook Secure Temp Folder located at "C:\Users\a.ollischer\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.Outlook\PPIU10RW before passing it to Excel 2013 in order to open it. It fails due to not trusting this location though I added the corresponding path to my Trusted Locations.

What can I do in order to make this work without having to tediously save each and every attachment to "My Documents" prior to opening it? Any help would be greatly appreciated.

March 18th, 2015 12:33pm

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