Emails not reflecting in Outlook desktop application, but are visible in mobile App

Question

Dear Team, Emails not reflecting in Outlook desktop application, but are visible in mobile App

---

Moved from: Microsoft 365 and Office | Access | Other | Windows

Answer 1

Dear @Lakshmana Rao Kondapalli,

Welcome to Microsoft Q&A. 

Thank you for reaching out and clearly describing the issue.

Based on your description, emails are successfully delivered to the mailbox (since they appear in the Outlook mobile app), but they are not showing in the Outlook desktop application. This usually indicates a client‑side display or sync issue rather than a problem with Microsoft 365 or Exchange Online.

• Just to clarify before suggesting the next steps, may I ask which Outlook version you’re using on Windows (New Outlook or classic Outlook)?

And can you confirm whether the emails are showing correctly in Outlook on the web?

If you are using New Outlook for Windows, you can try these steps:

1/ Manually refresh/sync the mailbox

In New Outlook, background sync may be delayed.

Click Sync / Refresh from the toolbar. Check whether the missing emails appear after a manual sync, check Focused Inbox and sorting then Switch between Focused and Other.

2/ Ensure the inbox is sorted by Date (Newest on top).

Emails can exist but not be visible due to the current view.

Review rules using Outlook on the web

Sign in to Outlook on the web. Go to Settings > Mail > Rules. Confirm no rules are moving or archiving messages automatically.

3/ Toggle Offline access (common fix for New Outlook)

Go to Settings > General > Offline > Turn Offline email off.

Restart New Outlook then Turn it back on after restart.

This forces New Outlook to rebuild its mailbox state.

3/ Remove and re‑add the account

Go to Settings > Accounts > Remove the affected account. Restart New Outlook and add the account again.

This refreshes authentication tokens and mailbox metadata.

4/ Test Outlook in Safe Mode

This helps rule out add‑ins interfering with synchronization.

Close Outlook. Press Windows + R, type outlook.exe /safe, and press Enter

Check whether the missing emails appear in Safe Mode

If emails appear in Safe Mode, disable add‑ins: Go to File > Options > Add‑ins

Disable all COM Add‑ins and restart Outlook normally

Please understand that our initial response does not always resolve the issue immediately. However, with your help and more detailed information, we can work together to find a solution.  

I hope this information helps point you in the right direction. If you run into any issues while trying the steps, or if something still doesn’t feel quite right, please don’t hesitate to reach out again. I’ll do my best to support you however I can.  

Looking forward to hearing back from you with any updates or additional details. 

Warm regards, 

---

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".    

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.   

Answer 2

If emails are visible in the Outlook mobile app but not in the Outlook desktop application, it could be due to several reasons. Here are some potential causes and solutions:

1. Cached Mode Issues: Sometimes, emails do not appear in the Cached mode Inbox even though they were synchronized. This can happen if messages are stuck in the incoming item processing pipeline. To resolve this, you can try starting Outlook with the /cleanips switch or clear the offline items in your Inbox to force resynchronization.
2. Filtering Options: If items are disappearing or not visible in a folder, it may be due to applied filters in the default view settings of the Outlook folder. Check the filtering options to ensure that no filters are hiding your emails.
3. Outlook Version Compatibility: Ensure that your version of Outlook is up to date and compatible with your email server settings. Sometimes, older versions may not sync properly with the server.
4. Network Connectivity: Check your network connection on the desktop application. A poor connection might prevent emails from syncing properly.
5. Profile Corruption: If none of the above solutions work, consider creating a new Outlook profile to see if that resolves the issue.

By following these steps, you should be able to troubleshoot the issue of emails not reflecting in the Outlook desktop application.

---

References:

• Sometimes emails do not appear in Cached mode Inbox even if they were synchronized down from mailbox
• Items disappear or are not visible in an Outlook folder