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This started happening yesterday. Any time I reply or forward an email the previous conversation thread is deleted from my email.. This is obviously a big problem particularly on forwarded emails
Using older versions of Outlook for Mac in business environments
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[IMG_0155.JPG.jpeg](/api/attachments/b31c60ad-71f9-4319-9bc5-4a1d088e0d00?platform=QnA)WAWMA
******@ME.COM
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Hi All,
I have not enabled "Show as Conversions" option. But as suggested i tried to enable it and disable it to see if the issue get fixed. But NO, issue is still there. Please help me to solve this ASAP.
I have the same problem. i also have same Outlook version in Mac Tahoe 26.5
This issue is in Legacy Outlook view. Not in New view (which i hate as keyboard navigation options are removed)
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Hi @RK
Thanks for reaching out and sharing your concerns.
To help us support you more efficiently, could you please create a new thread on the forum and include the full details of your issue.
When posting, please make sure to include:
A clear description of your issue.
Your current Outlook version and build.
Any additional support you may need.
Providing these details will help our team quickly understand your situation and offer the most accurate guidance.
Warm thanks.
First check the same mail in Outlook on the web… if it’s still there, the local thread‑map is what’s breaking on reply. then close Outlook and in Finder use “Go to Folder” to open that path and delete the “Microsoft Outlook” folder — it rebuilds and the thread comes back.
in Finder>Go>"Go to Folder" > it brings the default like ~/Library/ .. if i search for "Microsoft Outlook" i get only the app "Microsoft Outlook" do you want us to delete the "Microsoft Outlook" App and try the reinstall and try to see the problem?
Thanks for the answer. It looks like I got an update May 4, which corresponds with the problem appearing. I have outlook 16.110. I am not sure how to access outlook on the web
Hi @Gordon Anderson
Thank you for your responding.
Currently, I have only been able to identify version 16.108.3, which was released on May 5, 2026. I have not found any newer update corresponding to version 16.110 available through Microsoft AutoUpdate on my side yet.
I will continue to monitor for newer updates and will test again once a new version becomes available.
Reference: Update history for Office for Mac - Office release notes | Microsoft Learn
In the meantime, to check whether the emails are still present on the mailbox server (and to rule out a local sync or display issue), please access Outlook on the web using the steps below:
Open any web browser (Safari, Chrome, Edge, etc.)
Go to: https://outlook.office.com
Sign in using the same email address and password you use in Outlook on your Mac
Once logged in, please check whether the affected email threads are still visible. If the emails are present on the web, this would indicate the issue is limited to the Outlook application on the Mac and can usually be resolved by adjusting settings, clearing the local cache, or re‑syncing the mailbox.
Please give it a try and let me know the result.
Warm thanks.
I had to create an outlook.com account and i signed in and there are no emails in my inbox
Hi @Gordon Anderson
Just to confirm, are you using the same business account in Outlook on your Mac?
Any updates would be greatly appreciated.
Warm thanks.
Outlook is part of my business's 365 account, yes
Hi,
To better assist you, I will open a Private Message on this thread. You can provide additional information and share a screenshot from your side so I can better understand the issue. This approach helps protect your personal information and prevents any sensitive details from being exposed publicly.
To view or send private messages, please sign in to the Microsoft Q&A forum using the account that created this thread, then select Private Messages.
Warm thanks.
Hi @Gordon Anderson
Thank you for sharing your concerns.
I have tested this behavior on my side, and it still shows the previous conversation thread as expected. This issue seems related to a misconfiguration or a client app glitch on your device.
To troubleshoot this issue, you could try to toggle Conversation view off and on.
Go to View and uncheck Show as Conversations (or Group messages by conversation).
Wait a moment, then re-enable it.
This often resolves threading glitches where replies or forwards cause the thread to “disappear” or regroup incorrectly.
To better address your issue, could you please provide the following information:
May I know your current Outlook version and build?
Whether you can access your account via Outlook on the web and try replying to or forwarding an email to see if you encounter the same behavior?
Any recent changes made since yesterday?
Please understand that our initial reply may not always immediately resolve the issue. However, with your help and more detailed information, we can work together to find a solution.
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.