Fixes or workarounds for recent issues in Outlook for Mac

Last updated: December 2016

Outlook for Mac crashes and slow performance

Last updated: December 1, 2016

ISSUE

After updating to 15.28, some Outlook 2016 for Mac customers are experiencing high CPU usage.

STATUS: WORKAROUND

A fix will be coming out in the next release, but as a workaround customers can turn off Automatic Language Detection by doing the following:

  1. Open a new, blank email.

  2. Click in the body of the email, and then on the Edit menu, select Language >Language.

  3. Clear the Detect language automatically check box and select Default.

ISSUE

Apple released macOS 10.12 Sierra on 9/20/2016. Some customers are reporting Office 2016 for Mac applications are closing unexpectedly, or crashing when an Office application is launched, or when the computer is moved between Wi-Fi networks (e.g. moving a laptop from home to work).

Microsoft is working with Apple to resolve this issue. We recommend customers in a workplace or school network configuration do not upgrade to macOS Sierra at this time.

WORKAROUND

Turning off “Auto Proxy Discovery” or “Automatic Proxy Configuration” is a possible workaround, if allowed by your organization’s network configuration.

  1. Go to System Preferences and open Network.

  2. Click on Advanced and go to Proxies.

  3. Check if "Auto Proxy Discovery" or "Automatic Proxy Configuration" is turned on.

Contact your local network administrator for more information on your network settings.

We will update this content when more information is known, including a fix or additional workaround.

Last updated: November 2016

ISSUE

If you have Silverlight installed and tried installing the latest version of Office 2016 for Mac via Microsoft AutoUpdate, the AutoUpdate tool crashes.

You may be experiencing this issue due to an older version of Silverlight installed in your machine. We recently have released a fix to protect Microsoft AutoUpdate from crashing due to an older version of Silverlight.

STATUS: FIXED

To fix this issue, please do the following:

Update to the latest version of Silverlight (version 5.1.50901.0)

  1. Follow the steps to install the latest version of Silverlight: https://www.microsoft.com/getsilverlight

  2. Open Safari, and on the top menu, click Safari > Preferences.

  3. Go to Security and then in the section “Internet plug-ins” click Website Settings….

  4. On the left side list of plug-ins, select Silverlight and then make sure that “Allow” is selected from the drop down menu.

  5. Once the Silverlight update is complete, try updating Office for Mac via Microsoft AutoUpdate.

Install the latest version of Office 2016 for Mac, version 15.28.0 (build 16111300)

  • Use Help > Check for Updates from any of the Office 2016 apps to get updates to the newer build.

  • If for some reason you can’t update via Help, you can manually download and install the new build from this article.

Outlook for Mac issues affecting email message, attachments, and other features

When replying to an email message or creating a new one containing an email signature, you receive the following error message:

"Some of the files in this web page are not in the expected location. Do you want to download them anyway? If your sure the Web page is a trusted source, click Yes."

Our engineering team is currently working on a fix for this issue. We'll post back with more information when a fix is released out to our customers.

In Outlook for Mac 15.22 you may notice that the Emacs-style keybindings no longer work properly. We apologize for any inconvenience this issue has caused and want to assure you that the Outlook team is working on a fix. We will update this article when the issue is resolved.

When composing emails, automatic language detection is not working in the new editor for Outlook 2016 for Mac (versions 15.20 and later).

We’ve recently released the fix for this feature in our latest update version 15.28.0 (Build 16111501) released on 11/15.

  • Use Help > Check for Updates from any of the Office 2016 apps to get the latest build.

  • If for some reason you can’t update via Help, you can manually download and install the new build from this article.

Please note that enabling this feature in version 15.28 has a different workflow from the previous mail editor (versions 15.19 or earlier). To enable automatic language detection, please refer to this article: Let Outlook 2016 for Mac automatically detect and spell check languages in your emails.

When pasting text and images in the new mail editor for Outlook 2016 for Mac (version 15.20 or later), paste doesn't default to 'Match Destination Formatting.'

We’ve recently released the fix for this feature in our update version 15.27 (Build 16111501).

  • Use Help > Check for Updates from any of the Office 2016 apps to get the latest build.

  • If for some reason you can’t update via Help, you can manually download and install the new build from this article.

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