A family of Microsoft word processing software products for creating web, email, and print documents.
I found a workaround to this issue.
I have a Mac with El Capitan (not relevant) and Office 2016. When I open a Word attachment from Outlook, it prompts to Duplicate which requires that I save it first in a non-temporary folder area before I can edit it.
My workaround is
- open the email in Outlook.
- You will see the attachment with a Word icon. Next to it is the PREVIEW button which uses the Mac's built-in Preview application. Click on the preview button to open it in the preview application.
- In the preview window in the upper right corner click on the OPEN IN WORD icon. It opens it in Word in edit mode without requiring a save.
I did not find the problem or resolution to be related to illegal characters.It's a deliberate sandboxing issue which makes sense from a security and UI point of view. It is a pain but, was put in place deliberately for a reason. I only started to investigate it after one of my Mac users complained about the extra steps. The biggest pain for the person was saving to a non-temporary folder area. If it defaulted to DOWNLOADS or MY DOCUMENTS, then this would have been more palatable.