Fixes or workarounds for recent issues in Outlook for Mac

Last updated: June, 2018

Last Updated: March 13, 2018

ISSUE

When you view an appointment or meeting in Week View, it may display as shifted one hour ahead.

This can happen after DST for US and Britain time zones. Other time zones may be affected too.

STATUS: FIXED

This issue has been fixed in the latest version of Outlook 2016 for Mac (version 16.11, released on March 13, 2018). To get the latest update, open Outlook for Mac, go to the Help > Check for Updates menu, and follow the instructions in the AutoUpdate app. You can use Work Week or Day view in the calendar as a workaround

Last Updated: May 21, 2018

ISSUE

When you convert an Appointment to a Meeting for IMAP or POP accounts, the invite is not sent.

This issue first started happening in version 16.10.

STATUS: FIXED

This issue has been fixed in Outlook 2016 for Mac (Version 16.12). To get the latest update, open Outlook for Mac, go to the Help > Check for Updates menu, and follow the instructions in the AutoUpdate app.

Last Updated: March 21, 2018

ISSUE

If you create a new email and use the Tahoma Regular font, the written text appears as bold text instead of regular text.

STATUS: FIXED

This issue has been fixed in Outlook 2016 for Mac (Version 16.11). To get the latest update, open Outlook for Mac, go to the Help > Check for Updates menu, and follow the instructions in the AutoUpdate app.

Last Updated: May 21, 2018

ISSUE

You must now press the Enter key to view search results in Outlook for Mac Version 16.10.

Previously, Outlook for Mac displayed search results as you typed.

STATUS: FIXED

This issue has been fixed in Outlook 2016 for Mac (Version 16.13). To get the latest update, open Outlook for Mac, go to the Help > Check for Updates menu, and follow the instructions in the AutoUpdate app.

Last Updated: May 21, 2018

ISSUE

The Outlook icon on the dock shows the unread count for both delegate and primary mailbox. This did not occur in Build 15.41.

STATUS: FIXED

This issue has been fixed in Outlook 2016 for Mac (Version 16.12).

A new preference has been added to count unread delegate mailbox emails. Go to Outlook PreferencesNotifications & Sounds.

To get the latest update, open Outlook for Mac, go to the Help > Check for Updates menu, and follow the instructions in the AutoUpdate app.

Last Updated: February 14, 2018

ISSUE

Emails get stuck in your Outbox and you get error code: 0x0000-998.

STATUS: FIXED

This issue has been fixed in the latest version of Outlook 2016 for Mac. To get the latest update, open Outlook for Mac, go to the Help > Check for Updates menu, and follow the instructions in the AutoUpdate app.

Last Updated: February 12, 2018

ISSUE

You may repeatedly get prompted to sign in and get this error message: "Mail could not be received at this time."

STATUS: INVESTIGATING

The Outlook for Mac team is currently investigating this issue.

Last updated: Sep 15, 2017

ISSUE

The Zoom setting can be found in a new email message window by selecting the Options tab and clicking the Zoom button on the Ribbon.

If the zoom setting is altered on a new message, the altered setting remains until changed back. Zoom does not change the actual font size, it simply zooms in or out on the composing window text, (impacts the composing mode window of all new messages/replies). Zoom does not affect the reading pane or received messages - those will show the actual font size.

Once the setting is applied in the Outlook profile, it will retain for all future messages until it is changed in the message Options menu.

This can cause a perceived smaller font if the zoom is set to less than 100%. For example, if the zoom is set at 75%, the font of newly composed (or reply/forward) appears to be smaller, compared to the reading pane or an open received message (not in composing mode).

Outlook for Mac Font size

STATUS

This behavior is by design. Please check your zoom settings if you run into this issue and adjust as appropriate.

Last updated: Sept 25, 2017

ISSUE

If you have the Cisco WebEx plugin installed, Outlook might crash when you interact with the ribbon.

STATUS: Fixed in latest WebEx version

To fix this issue, please update to the latest WebEx plug-in version (minimum supported version on macOS High Sierra is 32.5.1.57).

Please refer to this support article for more details.

Last updated: August, 2017

ISSUE

When you send an email with an attachment larger than 25 MB, you get an error message and the mail doesn’t go through.

Error about large attachments

STATUS: Workaround

We’re working to resolve this issue. In the meantime, please use your Web mail when sending attachments that are larger than 25 MB.

Last updated: August, 2017

ISSUE

It’s not possible to transfer Entourage profiles when you migrate to Outlook for Mac 2016.

STATUS: Workaround

To transfer Entourage profiles to Outlook for Mac 2016, import profiles data into Outlook 2011 first, and then import Outlook 2011 profile data to Outlook for Mac 2016.

See these articles for more information: Import information into Outlook for Mac 2011 and Import email messages, contacts, and other items into Outlook 2016 for Mac.

Last updated: August, 2017

ISSUE

You are unable to add a recipient to Safe Senders in Outlook 2016 for Mac. Outlook currently only allows adding a recipient to Blocked Sender list. Emails from the blocked sender will be moved to the Junk E-Mail folder.

STATUS: Workaround

To work around this issue, please use the Web mail server side to manage the settings.

See this article for more information.

Last updated: March 2018

ISSUE

Attachments are grayed out or you’re unable to download the attachments.

STATUS: FIXED

This issue has been fixed in Outlook 2016 for Mac (Version 16.11). To get the latest update, open Outlook for Mac, go to the Help > Check for Updates menu, and follow the instructions in the AutoUpdate app.

If, after installing the latest update, you still see a grayed out attachment, please click the Get entire message button to fix the issue.

Last updated: August, 2017

ISSUE

Cannot Import Apple Contacts into Outlook 2016 for mac.

STATUS: Workaround

  1. Drag the contacts out of your Mac address book and drop onto your desktop.

    This creates a single .vcf file on your desktop.

  2. Right-click on the file and choose Open With > Microsoft Outlook.

  3. A new contact window opens in Outlook which is the first address in your .vcf file.

  4. Click Save in the contact window. Outlook will save it, and then begins populating the rest of your contacts.

You can also drag the .vcf file directly to an Outlook contact folder. The contacts will be saved in Outlook automatically.

Last updated: August, 2017

ISSUE

Folders disappear after updating 15.35.170610 to 15.36.170702.

STATUS

This is by design in the updated sidebar. The folders are collapsed and need to be expanded manually. If you’d like to show the folders at the top again, please add the folders to your favorites, by clicking the star next to the folders. You can then organize your favorite folders in any order.

See this article for more details on before and after experience: New Sidebar with Favorites and Send Later.

Last updated: January, 2018

ISSUE

You receive Sync Error: 19803 when synchronizing your Office365 account.

Sync Error

STATUS: FIXED

This issue has been fixed in the latest version of Outlook 2016 for Mac. To get the latest update, open Outlook for Mac, go to the Help > Check for Updates menu, and follow the instructions in the AutoUpdate app.

Known issues, changed functionality, and blocked or discontinued features

Automated troubleshooting tools

Use the following tools to resolve various Outlook for Mac issues. See this page for more information and learn how to install the tools: Outlook for Mac support tools.

Outlook Search Repair

This tool repairs search issues in Outlook for Mac. For example, when search returns no results for items that do exist in your mailbox, or you get older data when you have newer items.

Outlook Reset Preferences

This tool resets customization that you've made to Outlook from the Outlook menu > Preferences. It also restores Outlook window size and position settings.

Set Default Mail App

This tool lets you choose Outlook for Mac as your default mail application. Then Outlook opens a new email whenever you click on a mailto: link in an email or website.

Reset Recent Addresses 

This tool lets you reset recent addresses that Outlook has stored, and delete recent addresses all at once, instead of one at a time.

Need more help?

Call support


To report issues or provide feedback, simply go to Help > Contact Support in Outlook for Mac.
For more information, see Contact Support in Outlook 2016 for Mac.

Have a feature request?

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To suggest new features in Outlook for Mac, go to Help > Suggest a Feature. Or, share your thoughts on the Outlook UserVoice site. We’re listening.

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