Outlook 2016: Cannot forward attachments from Plain Text after Tuesday updates


This is affecting all users in our organization.  If we have received an e-mail in plain text with an attachment, and attempt to forward that e-mail, Outlook strips the attachment.  It started today after Tuesday's updates.  The default option under "compose messages in this format" is set to HTML, but I have tried all options.  The attachment is immediately stripped after hitting the forward button.  If I go to Format Text on the forward, and change to HTML or Rich Text, it does not appear.  If I send the e-mail, the recipient does not have an attachment.  

I have tried starting Outlook in safe mode, disabling various add-ins, repair installation, to no avail.
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JohnBusiness Consultant (Owner)Commented:
I do not see text much more (cannot change fonts, colours and so on). Simple, text only, HTML emails retain attachments. I just tested that here with all Windows 10 and Office 2016 updates.  

Try using just HTML.
wirbicki2Author Commented:
I have tried using HTML. We can not control what the sender is using though. All machines are Windows 7 Professional.
JohnBusiness Consultant (Owner)Commented:
Possibly there is an issue with Windows 7 but I have not seen that with clients at this point.

What I do and would recommend is to save the attachments, copy the email contents, make a new HTML message, paste the text, attach the documents and then send
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Qlemo"Batchelor", Developer and EE Topic AdvisorCommented:
As a workaround, does forwarding the email as attachment work?
wirbicki2Author Commented:
Forwarding the e-mail as an attachment does work.

There is an issue with this update.  The problem goes away when I uninstall the update and resurfaces when I reinstall it.  I am also not the only person experiencing this issue.  I guess I will wait for Microsoft to issue a fix.



(I do not have "Read all mails as PlainText" option checked).
Qlemo"Batchelor", Developer and EE Topic AdvisorCommented:
There is, obviously, no other choice than to not install the update and wait for a fix, I agree.
Ong BLCommented:
Same issue here.
Plain text with attachment seems to be unable to forward attachments. They just disappear.
HTML with attachment do not have this issue.

I tried with Windows 7 and Windows 10. Both the same. It should be the recent Outlook security patch.
Josh PaquetteCommented:
Same issue here, windows 10 outlook 2016
Josh PaquetteCommented:
Found workaround for the moment.  Uninstall Update KB4011626
AaronSSHIT ConsultantCommented:
I experienced the same thing and had to uninstall the patch. I submitted a bug report to Microsoft last week and the were able to replicate the issue and confirm it is a bug.
JohnBusiness Consultant (Owner)Commented:
I am not sure why so many of your users use plain text setting. HTML has been default for a decade. Just get users to use HTML and use the workaround I posted earlier until people change.
AaronSSHIT ConsultantCommented:
John, that's not the issue. HTML is already the default for all users. The issue is that we have a lot of customers who send us plain txt emails with attachments, and these cannot be forwarded. Similarly, most multifunction scanners deliver PDFs as an attachment in a plain text email. It is these things which cannot be forwarded.
JohnBusiness Consultant (Owner)Commented:
If HTML is the format, even messages in plain text in HTML can forward attachments including PDF. I do this routinely without issue.
AaronSSHIT ConsultantCommented:
You're not understanding the issue John. The bug, as confirmed with Microsoft, is that when a user receives an email in plain text format with an attachment, and then they try to forward that email with the attachment, then the attachment is removed / not attached. Yes, once I have this forward open I CAN change the format back to HTML -- but the attachment is already missing. The user has to first save the attachment locally, then forward, then re-attach it, then hit Send. For our customer service reps who do this a hundred times / day, it makes their work really frustrating.

It is possible that you may not be able to replicate the issue, because it did not affect all plain text emails we received, just some of them. Thankfully Microsoft was able to replicate the issue and is working on a fix.
JohnBusiness Consultant (Owner)Commented:
If I receive an email formatted HTML but with text content and with an attachment (PDF or other), I can forward it with attachment (PDF or other) just fine. If the format is HTML, it works for me and my clients.

If there is some other obscure HTML issue, I have not yet seen it.
We are having the same problem.  Incoming faxes from an MFP are being sent in Plain Text format.  The person receiving them is unable to forward them .  We will also proceed with Uninstalling Update KB4011626
Darryl BurtonCommented:

We have the same issue . MFD's scan to pdf .Forward e-mail and attachment is stripped. I see that there was a click to run 32/64 bit patch but only applies to 365 I believe. I will just join the queue in waiting for the hotfix/patch
tbilletit consultantCommented:
I just ran across this same issue.  Fresh install of windows 10 an office 2016.  Updated all patches and it still has this issue.  An email is with an attachment is sent from the copier/scanner to my outlook in plain text format.  I click the option to forward the email and manually change it to HTML format.  However, the attachment is already gone by this point and it isn't included in the forwarded email.
Josh PaquetteCommented:
This is officially a known issue from what I'm hearing...we are having it with multiple users.  It all goes back to patch KB4011626.  If you remove that patch it will work properly again, but the patch keeps reinstalling itself for my users on windows 10.
AaronSSHIT ConsultantCommented:
Josh, you can use the "Show/Hide update tool" from Microsoft to "hide" the update. This will prevent it from re-installing.

The tool can be found here: http://download.microsoft.com/download/f/2/2/f22d5fdb-59cd-4275-8c95-1be17bf70b21/wushowhide.diagcab
AaronSSHIT ConsultantCommented:
I received word from Microsoft today that this bug has been resolved with the manual patch KB4011123 (released Jan 22)


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wirbicki2Author Commented:
Thank you! - Any idea why this is only a manual update instead of an automatic one?  I will close the thread after this.
AaronSSHIT ConsultantCommented:
They did not provide me with any more information than "the issue with attachments forward has been resolved with KB4011123." My best guess is that it is a manual update for now, but that it will then be included in the Feb round of updates after they have enough people confirming that it fixes the problem.
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