Legacy Outlook for Mac is now removing history when emails are replied or forwarded

RK 50

Hi All,

I use Outlook version 16.110 on a Mac (M2Pro) running MacOS Tahoe 26.5

After last Microsoft update, when i am replying or forwarding; i see history of the email chain is getting removed. This is not expected as we cant check the email to understand the full history.

In search i found another thread which talking the exact same issue. I tried to implement the recommendations given in this thread, but it did not fixed my issue. I tried to tag this issue in that. But i was advised to open a new thread, hence i am opening this thread.

I use Outlook Legacy mode as it offers browsing from one email to other emails using keyboard option (ctrl+[ / ctrl ] ) and this option does not work in newer look.

Please help me to fix this issue. Let me know if you need any more details about the issue. If needed i can show the issue in a zoom/team web call as well.

Reuben Rubio 5 Reputation points

2026-06-17T19:02:00.3466667+00:00

Reverting to 16.109.3 seems to have fixed the problem. Can I/we please ask that Microsoft do better QA on updates? At an affiliated organization where I know people, there was a Microsoft update this weekend on the Windows side that was buggy and made people backtrack the version. If you are going to suggest auto-updates, please make sure that updates do not steamroller prior capabilities. Attribution of prior email content in a thread is important. Thank you.

RR
MRA Admin 5 Reputation points

2026-06-17T21:07:44.7333333+00:00

Ugh!! Having the same issue. Can't roll back the app store version easily, and we have many users! Hopefully there will be a fix quickly!
Purple Tours 5 Reputation points

2026-06-18T10:25:28.9066667+00:00

Same issue- just on mac studio; Macbook all okay still. Can revert to the non-legacy version and solves the problem but much prefer legacy outlook :(
Phil M 0 Reputation points

2026-06-18T12:55:39.0133333+00:00

Microsoft needs to fix this issue. This is RIDICULOUS and is causing SERIOUS issues in our organization. Billion dollar company can't update without completely screwing something up. Joke.
Michael C 0 Reputation points

2026-06-18T16:53:16.42+00:00

Same issue here.
MARGARITA SANZ GONZÁLEZ 0 Reputation points

2026-06-19T11:17:28.1066667+00:00

Same problem here, messages disappear when replying. Please help with fixing this issue. Thanks!
Rodrigo Ditter Rodrigues 0 Reputation points

2026-06-19T17:10:50.7966667+00:00
Do we have any estimate on when an update to fix this issue will be released?
Laura Marier 5 Reputation points

2026-06-20T11:34:06.7066667+00:00

An easy workaround: When replying or forwarding: "select all" and copy the email you're replying to or forwarding. Then when you click reply or forward, paste the email you've copied into the message area. You can also keep track of the thread that way.
Kim@WSRefrA 0 Reputation points

2026-06-20T16:40:52.3733333+00:00

Travis,

Once I download 16.109.3, how do I revert Outlook back to this version and delete 16.110. Auto Update has been turned off. Thanks.
Diana Welch 0 Reputation points

2026-06-22T19:52:57.98+00:00

Same thing here. This is a serious problem to not show the original email thread. Microsoft needs a fix NOW. None of the suggested fixes work, and I am not savvy enough to go back to a previous OS without losing all of my data. I'm going to have to pay a technician to do this. RIDICULOUS
MQuin 10 Reputation points

2026-06-24T18:59:00.5366667+00:00

As of this afternoon, it seems to be fixed. I did not make any adjustments or applications - just waited out the fix. It is now working for me.
Phil M 0 Reputation points

2026-06-24T19:38:53.9166667+00:00

Not working here. Restarted my computer and still missing all information in the thread.
Laura Marier 5 Reputation points

2026-06-25T12:28:02.23+00:00

Same as @MQuin. It was fixed and didn't do a thing. Thank you!

Answer accepted by question author

Anonymous

Hi @RK and everyone,

Microsoft has rolled out version 16.110.1 on Current Channel. Please update your device to this version to fix the issue.

User's image

Thanks to everyone for being patience.

Charlie from Dover MA 0 Reputation points

2026-06-25T12:38:50.0566667+00:00

Hi Dora, MS Automatic update shows 110.1 for Excel, Powerpoint, and Word but shows 110 for Outlook. I am on 109 and that workaround is working based on your earlier post. This happens when I select Current Channel or Current Channel (Preview). What am I missing?

Thank you..
Anonymous

2026-06-26T02:30:01.9766667+00:00

Hi Charlie from Dover MA

You might want to try downloading and installing the Outlook 16.110.1 update package directly from the Office for Mac release history page, then check whether the issue is resolved.

Please let us know how it goes.

Best regards,
Chris Grimaldo 0 Reputation points

2026-06-26T12:47:23.1933333+00:00

This did not fix the issue.
Anonymous

2026-06-29T02:31:42.57+00:00

Hi Chris Grimaldo

If the issue persists after updating to Outlook version 16.110.1, I recommend contacting Microsoft Support for further investigation.

-For business accounts, you can raise a support ticket through the Microsoft 365 Admin Center by signing in and selecting Help & support. From there, you’ll be guided through submitting a request. Once the ticket is created, a Microsoft support agent can contact you directly. For further instructions, please refer to: Get support - Microsoft 365 admin | Microsoft Learn.

Please note that contacting Microsoft Support requires an active Microsoft 365 subscription and the appropriate admin role (such as Global Administrator). If you’re an end user, please reach out to your IT administrator to raise the request on your behalf.

-For personal accounts, you can contact Microsoft support by going to Microsoft Contact Us > Type "Support" and click Get Help > Click Sign in to contact Support at the bottom of the page. > Under products and Services, select Microsoft 365 and Office Option > Under category, select technical Support > Chat with a support agent in your web browser.

Thank you for your understanding.

8 additional answers

AI answer

2026-06-13T02:21:11.91+00:00
The described behavior matches a known issue where message content or headers are truncated when replying or forwarding in some Outlook for Mac builds. These issues have been addressed in later updates of Outlook for Mac.

To resolve the problem where history is removed when replying or forwarding in Legacy Outlook for Mac:

Update Outlook for Mac to the latest available build for the channel in use. Several reply/forward and header‑truncation issues have been fixed in newer versions, for example:

A fix for truncated reply/forward headers in certain languages in build 16.20 (181208).

Multiple fixes to reply/forward behavior and plain‑text handling in later 16.xx builds, as reflected in the release notes.

After updating, restart Outlook and test reply/forward on a new message chain to confirm that the full conversation history is preserved.

If the issue persists after updating to the latest build, create a new Outlook profile and re-add the account, then test again. Corrupted profiles can cause unexpected reply/forward behavior.

If still affected, consider switching from Legacy Outlook for Mac to the new Outlook for Mac client, as Legacy Outlook is in maintenance mode and will reach end of support against Exchange Online in October 2026. The new client receives the most up-to-date fixes and feature improvements.

If blocked from accessing required features or updates, contact Microsoft support for assistance, as recommended for customers impacted by Legacy Outlook limitations.

References:

Subject and Recipient headers do not appear in some language versions of Outlook for Mac

Outlook for Mac - Release notes for Beta Channel builds

End of support for legacy Outlook for Mac

Fixes or workarounds for recent issues in Outlook for Mac
AI-generated content may be incorrect. Read our transparency notes for more information.
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Anonymous

2026-06-13T02:55:04.6233333+00:00
Hi RK

Thank you for reaching out to the Microsoft Q&A Forum.

I understand how inconvenient this can be, especially when you rely on the message history to follow the conversation thread.

Based on my research, I found that a few other users recently experienced very similar behavior in Legacy Outlook for Mac version 16.110, where replying to or forwarding emails no longer includes the original message content.

As a temporary workaround, a rollback to an earlier version, such as 16.108 or 16.109.3, appears to have helped in similar cases. You may want to try this and see whether the issue persists:

+Open any Office app > Help > Check for Updates > clear the checkbox for “Automatically keep Microsoft Apps up to date.”

+Quit all Office apps.

+Go to Applications > choose Microsoft Outlook > Move to Trash.

+Install the 16.108, 16.109 or 16.109.3 package from this link: Update history for Office for Mac - Office release notes | Microsoft Learn

You can refer to the following discussions:
- Legacy Outlook for Mac is now deleting threads when emails are replied or forwarded - Microsoft Q&A
- Outlook for Mac - Reply/Forwards Does Not Include the Original E-mail - Microsoft Q&A
Please understand that this is a public peer-to-peer community forum. While moderators and community members can share guidance and experiences, we do not have access to internal diagnostic tools and are unable to arrange Teams support sessions through the forum.

I hope this helps. Please let me know how it goes after trying the rollback.

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.
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RK 50 Reputation points

2026-06-13T10:58:21.8466667+00:00

Automatic update checkbox is grayed out for me. That is is mandatory in my company. Print screen attached

Daniel G 5 Reputation points

2026-06-13T20:35:52.7866667+00:00

I am having the same issue. it is a big deal not to have email threads continue with history.

Rolling back to previous version is also a big task if you have multiple email accounts populating Outlook and have all settings personalized.

Will this be addressed in short term by microsoft? how long can i expect the problem to persist?

Anonymous

2026-06-15T03:55:37.8966667+00:00

Hi RK

Thank you for the update.

If your device is managed by your organization and the automatic update setting is enforced through company policies, please contact your organization's IT administrator for assistance, as they may be able to help with the rollback process.
Best regards,

Anonymous

2026-06-15T03:56:16.7166667+00:00

Hi Daniel G

Thank you for sharing your experience. I understand your concern, especially if rolling back Outlook is not practical in your environment.

At this time, I have not found any official communication from Microsoft regarding a fix or an expected timeline for this behavior. Please note that this is a user-to-user support forum. While moderators and community members can share guidance, we do not have visibility into Microsoft's internal development or release schedules.

Thank you again for your understanding.

RK 50 Reputation points

2026-06-15T12:29:37.1566667+00:00

How can we open a bug to Microsoft and request for a solution?

Anonymous

2026-06-16T03:16:06.76+00:00

Hi RK

If you need further assistance with this issue, I recommend raising a support ticket with Microsoft Support. A support engineer can review the issue and, if necessary, escalate it for further investigation.

Please note that creating a support ticket typically requires Global Administrator permissions. If you do not have this role, please contact your organization's IT administrator, who can create a support request on your behalf.

For further instructions, you can follow this guide: Get support - Microsoft 365 admin | Microsoft Learn.

Best regards,

RK 50 Reputation points

2026-06-16T09:19:23.41+00:00

Ok i will request my IT administrator on this. Meanwhile there is no solution and stay/live with this is the only way?

Anonymous

2026-06-17T00:52:53.07+00:00

Hi RK

Unfortunately, I do not have any additional workaround to offer at this time beyond the rollback option discussed in this thread.

Thank you for your understanding.

Sabu Augustine 0 Reputation points

2026-06-17T06:40:51.95+00:00

@Anonymous Thank you for providing a solution. As you advised, I switched back to 16.109.3 version of Outlook and it's functioning correctly now.

Jonas Nilaus Vilhelmsen 0 Reputation points

2026-06-17T11:23:52.1033333+00:00

I have the same issue and am also not in a position to install an older version. Please fix this!

Charlie from Dover MA 0 Reputation points

2026-06-20T21:30:58.7433333+00:00

Hi Dora,

Found myself to your post. Going back to 16.109.3 fixed my problem. Clear to follow, very helpful. TY.
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LukeD 0 Reputation points

2026-06-17T14:34:37.86+00:00

Another workaround (assuming they are going to fix this) is to hit reply to the email in Outlook Online, but then open Outlook Mac to finish it. That's a pain, but maybe a workaround while they fix this.
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C02Wat 0 Reputation points

2026-06-17T23:09:36.9+00:00

I had the same issue on Legacy Outlook for Mac version 16.110.

As advised in this thread, I disabled automatic updates, removed Outlook, and installed version 16.109.3.

After rolling back to 16.109.3, replying and forwarding emails once again includes the original message history. The issue appears to be resolved.

Thank you for posting the workaround.

Laura Marier 5 Reputation points

2026-06-20T11:34:45.0033333+00:00

An easy workaround: When replying or forwarding: "select all" and copy the email you're replying to or forwarding. Then when you click reply or forward, paste the email you've copied into the message area. You can also keep track of the thread that way.
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Anonymous

2026-06-17T23:38:52.1166667+00:00

Hi everyone,

Thank you all for sharing your experiences and updates.

Microsoft has confirmed that this is a known issue affecting Legacy Outlook for Mac. Specifically, the issue impacts the retention of conversation history when replying to or forwarding messages. The product team is currently investigating this behavior, and a fix will be released once it becomes available.

For the latest updates on this issue, please refer to the following article, which will be updated as new information becomes available: Replying to or forwarding an email does not include the original message in the email body in legac…

As a workaround, you may want to consider downgrading to an earlier version of Outlook, as mentioned previously, if your environment allows it. Alternatively, you may temporarily switch to New Outlook until a fix is released.

Thank you again for your patience and understanding.
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10+ people found this answer helpful.
Daniel G 5 Reputation points

2026-06-18T01:42:20.6+00:00

Thank you @Anonymous

Laura Marier 5 Reputation points

2026-06-19T16:23:33.7033333+00:00

Thank you, Dora. Glad they're working on it.

Another workaround: When replying or forwarding: "select all" and copy the email you're replying to or forwarding. Then when you click reply or forward, paste the email you've copied into the message area. Easy peasy. You can also keep track of the thread that way.

Muhammad Aqeel 0 Reputation points

2026-06-22T11:10:47.7533333+00:00

Hello Guys any update on this Fix?

Anonymous

2026-06-22T23:30:52.84+00:00

Hi everyone,

Thank you for continuing to share your feedback, experiences, and workarounds.

At this time, there have been no new updates from Microsoft regarding this issue, and the product team is still investigating the behavior.

Please continue using the workaround that best fits your environment until more information becomes available. If there are any further updates from Microsoft, I will share them in this thread.

Thank you again for your patience and understanding.

Anonymous

2026-06-24T00:47:06.7533333+00:00

Hi everyone,

I would like to share an update regarding this issue.

As another workaround, if reverting to an earlier version or switching to New Outlook is not suitable for your environment, you can try updating to Outlook for Mac version 16.110.1 in Current Channel (Preview). Another user has reported that updating to this version resolved the issue for them.

This sign indicates an official fix will be rolled out in near future.

Best regards,
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Legacy Outlook for Mac is now removing history when emails are replied or forwarded

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