"Outlook blocked access to the following potentially unsafe attachments"

Itzik picture Itzik · Jun 28, 2017 · Viewed 31.3k times · Source

Recently, we have some users which suddenly got this massege: "Outlook blocked access to the following potentially unsafe attachments" (outlook 2010 plus) I had tried all of this: https://support.microsoft.com/en-us/help/829982/outlook-blocked-access-to-the-following-potentially-unsafe-attachment but nothing had changed...

Does anyone hav an idea ?

thank you !

Answer

Guest picture Guest · Jul 6, 2017

The update blocks access to attachments with long filenames and/or file names with consecutive periods

Remove this update to fix :- (might want to decline these updates in WSUS to prevent re-installation)

Outlook 2007: KB3191898 Outlook 2010: KB3203467 Outlook 2013: KB3191938 Outlook 2016: KB3191932

Replaced with :-

Outlook 2010 KB4011042 Outlook 2013 KB3191849 Outlook 2016 Fixed in build 1706 - run Office update (note not fixed in Deferred channel) No fix for Outlook 2007