Hi, I'm having a rather odd problem with my Outlook for Mac 2016 on O365 E3. I cant open attachments in random emails in my Inbox. I can see the email has an attachment but its greyed out and I cant open it.

I can see and open the attachment via OWA, on my Tablet and on my phone but not on Outlook for Mac 2016. There are a few emails with the same issue and it is NOT specific to a sender or an attachment type. The only thing I can recall is having a few syn errors when I had a problem with my Internet but my Sync error logs are now empty. Hi, What's the build number of your Outlook for Mac client? Does this issue happen to other users in your organization? Do you have any other email account type configured in your Outlook?

Sep 2, 2015 - This update provides new functionality and various improvements and fixes for Outlook for Mac for Office 365. THIS RELEASE CONTINUES TO BE AVAILABLE TO ELIGIBLE OFFICE 365 SUBSCRIBERS ONLY. This download allows you to export and save to the PDF and XPS formats in eight 2007.

Does this issue happen to other email accounts? When this issue happens, please try forwarding the email to yourself to see if the issue persists.

We can also try forwarding the emails to another email account to check the result. Regards, Steve Fan TechNet Community Support Please mark the reply as an answer if you find it is helpful. If you have feedback for TechNet Support, contact.

Hi, What's the build number of your Outlook for Mac client? Version 15.15 (151008) Does this issue happen to other users in your organization? Yes Do you have any other email account type configured in your Outlook? Does this issue happen to other email accounts? No other accounts When this issue happens, please try forwarding the email to yourself to see if the issue persists.

We can also try forwarding the emails to another email account to check the result. User cannot forward, reply, reply all, open attachments.

No actions are available Regards, Steve Fan TechNet Community Support Situation may be resolved with all users being on Outlook for Mac 2016. Previous emails sent with attachments before upgrading to Outlook for Mac 2016 still cannot be viewed. Version 15.21.1 (160411), El Capitan (10.11.4).

The only way I've been able to solve it is to right click on the account (top level with the disclosure triangle), click Properties then click Empty Cache. This triggers a complete refresh/download of the account (and can take some time). The only problem is that different messages fail to download the attachment. My last resort is to use Mac Mail linked to Exchange (for just to get the specific attachment) or web access. Neither is preferred. Another frustration with this attachment-download issue is that you cannot forward or archive the message. It's stuck in your inbox unless you delete it.

I tried moving several hundred messages to 'My Computer' when my account reached it's limit and found several message left behind. All had the greyed out attachment. Makes archiving really frustrating. Please fix this soon. For me this happens when Outlook for Mac 2016 tries to download attachments using a weak internet connection. Somehow, the download fails, and Outlook is unable to re-download later when a better connection is available. So the greyed out attachments are just stuck in limbo -- can't open, can't redownload.