Some unread emails go missing after a few seconds on new Microsoft outlook

Question

Some unread emails go missing after a few seconds on new Microsoft outlook

Mohd Azril Shafiq Mustaffa 70

Hi there,

One of my user new outlook unread emails goes missing after a few seconds.

the email is not in any delete & junk folder.

No rules were made.

Have already reinstalled the Outlook.

The issue still persists.

The email is there when we tried to view it on web browser and outlook classic.

Outlook version as per below:

Microsoft Outlook Version: 1.2026.105.100

Client Version: 20260109002.06

WebView2 Version: 143.0.3650.139 (Stable)

Session ID: [Moderator note: personal info removed]

0 comments

Answer accepted by question author

Jeanie H 11,955 Microsoft External Staff Moderator

Dear @Mohd Azril Shafiq Mustaffa,

Thank you for posting your question in the Microsoft Q&A forum.

Those emails are still appearing on the web version as you mentioned; where exactly do they appear, in which tab and which folder?

Have you tried searching for the subject, content, or sender of those emails within the New Outlook yet? If you search for them, do they show up?

Could you please try removing your account from the New Outlook, then sign back in and let me know how it goes?

Looking forward to your response!

Mohd Azril Shafiq Mustaffa 70 Reputation points

2026-01-21T09:11:26.4033333+00:00

Those emails are still appearing on the web version as you mentioned; where exactly do they appear, in which tab and which folder?

The email appears in the Inbox folder as it should be.

Have you tried searching for the subject, content, or sender of those emails within the New Outlook yet? If you search for them, do they show up?

When trying to search for the email, the email showed up.

Could you please try removing your account from the New Outlook, then sign back in and let me know how it goes?

Have tried this, it seems to be fixing the issue for now. The email does not disappear in the mailbox as previously. Will monitor it closely.
Jeanie H 11,955 Reputation points Microsoft External Staff Moderator

2026-01-21T23:33:38.2166667+00:00

Dear @Mohd Azril Shafiq Mustaffa,

Thanks for the update! I’m glad to hear this seems to be improving the behavior for now.

Since the issue no longer reproduces and emails are no longer disappearing, would you mind accepting this answer? This also helps other customers who may be experiencing a similar issue find the suggestion more easily.

I’ve seen reports where similar symptoms were related to UI behavior or browser data (such as cached data or cookies), so it’s possible this was contributing to what you observed. Please continue to monitor the mailbox, and if anything changes or the issue reoccurs, feel free to let me know.

If other users run into a comparable situation, you’re also welcome to refer them to this post. And of course, if you notice any new or different issues, don’t hesitate to reach out - I’m happy to help.

1 additional answer

Your answer

Mohd Azril Shafiq Mustaffa 70 Reputation points

2026-01-21T09:11:26.4033333+00:00

Those emails are still appearing on the web version as you mentioned; where exactly do they appear, in which tab and which folder?

The email appears in the Inbox folder as it should be.

Have you tried searching for the subject, content, or sender of those emails within the New Outlook yet? If you search for them, do they show up?

When trying to search for the email, the email showed up.

Could you please try removing your account from the New Outlook, then sign back in and let me know how it goes?

Have tried this, it seems to be fixing the issue for now. The email does not disappear in the mailbox as previously. Will monitor it closely.
Jeanie H 11,955 Reputation points Microsoft External Staff Moderator

2026-01-21T23:33:38.2166667+00:00

Dear @Mohd Azril Shafiq Mustaffa,

Thanks for the update! I’m glad to hear this seems to be improving the behavior for now.

Since the issue no longer reproduces and emails are no longer disappearing, would you mind accepting this answer? This also helps other customers who may be experiencing a similar issue find the suggestion more easily.

I’ve seen reports where similar symptoms were related to UI behavior or browser data (such as cached data or cookies), so it’s possible this was contributing to what you observed. Please continue to monitor the mailbox, and if anything changes or the issue reoccurs, feel free to let me know.

If other users run into a comparable situation, you’re also welcome to refer them to this post. And of course, if you notice any new or different issues, don’t hesitate to reach out - I’m happy to help.

Answer 1

It sounds like the issue with the unread emails disappearing in the new Microsoft Outlook could be related to filtering settings. Sometimes, items may not actually be deleted but are filtered from view due to certain settings applied to the folder. Here are some steps you can take to check and adjust the filtering options:

In the ribbon, select the View tab.
In the Current View area, select View Settings.
Select Filter, and then review the following tabs for any selections that could filter out specific messages:
- Tasks
- More Choices
- Advanced

If there are any filters applied that might be causing the unread emails to not display, adjusting or removing those filters should help resolve the issue. Additionally, ensure that the view settings are set to show all items, including unread emails.

If the problem persists after checking the filters, it may be beneficial to look into any synchronization issues or settings specific to the new Outlook version you are using.

References:

Items disappear or are not visible in an Outlook folder