Microsoft added a security update for Outlook to block attachments if it has a numerous dots before the extension. e.g. filename..doc or filename…doc.
Run the program, Search for updates, select Hide Updates, Select the KB to hide from Windows Updates————————————————————————————————————————————————————
After applying the June update for Outlook 2007, 2010, 2013 or Outlook 2016 (MSI) some attachments may be blocked from being opened. There are two issues here;
- Attachments could get blocked as they are deemed “potentially unsafe attachments” even when they don’t have an unsafe file extension (like pdf, docx, xlsx).
- The blocked attachments are mentioned in the Infobar. This issue applies to files that have two dots or an exclamation mark in front of their file extension; -test..txt -test!.txt
- Attachments that are embedded (with the file icon shown in the message body) in an RTF formatted message, calendar item, contact item or task item can’t be opened. Trying to do so produces the error;
- The program used to create this object is Outlook. That program is either not installed on your computer or it is not responding. To edit this object, install Outlook or ensure that any dialog boxes in Outlook are closed.
Error when trying to open an embedded attachment after applying the June 2017 update.
Update June 28 and July 5: Fixes now available for some versions
New updates have been released for some versions of Outlook which fixes these issues. The other versions will follow soon!
- Outlook 2007Not yet available.
- Outlook 2010KB4011042 (download: 32-bit or 64-bit)
- Outlook 2013KB3191849 (download: 32-bit or 64-bit)
- Outlook 2016 (MSI)KB3213654 (download: 32-bit or 64-bit)
- Outlook 2016 (Office 365)Fixed in Version 1706 (Build 8229.2073) get it via Update Now.Not yet fixed for the Deferred Channels.
Current workarounds are;
- For the first issue; Download the files via web mail. Exchange and Outlook.com users can use Outlook on the Web (OWA) for this, Gmail users can use the Gmail website, etc…
- For the second issue, you can save the files to your Desktop (drag & drop also works) and open the files from there.
- Uninstall the June update for your Outlook version. Please note that this is a security update, so uninstalling the update is only recommended when you know the risks and can’t use the other workarounds.
For further information and descriptions of other issues regarding these updates also see; Outlook known issues in the June 2017 security updates.
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