Email Sync Problems

How to Fix Outlook Mobile Email Sync Problems on Galaxy S24 Ultra

Amos Gikunda Sep 27, 2026 869 views

Question details

The Outlook for Android app fails to sync emails, preventing the user from receiving new messages or viewing sent mail.

How to Fix Outlook Mobile Email Sync Problems on Galaxy S24 Ultra

Product: Outlook for Android
Device & OS: Android (Samsung Galaxy S24 Ultra)
Scenario: A user with a Microsoft 365 subscription is attempting to manage emails on their mobile device but is unable to receive new mail or see sent items.
Observed behavior: Outlook stops receiving new emails and fails to display sent messages. The issue persists even after uninstalling and reinstalling the application on the device.

Before you start

Before troubleshooting, verify your active internet connection and check if your Microsoft 365 subscription is active. You should also confirm your exact email account type (Microsoft 365 Business, Exchange, Outlook.com, POP, or IMAP) as this determines how the app connects to the server.

Solution 1Recommended

Reset the Email Account in Outlook Mobile

Resetting the account clears local app sync data and forces Outlook to re-authenticate and reconnect with the mail server, which resolves most synchronization issues.

This process will not delete your emails from the server. It simply refreshes the connection between your Galaxy S24 Ultra and the Microsoft Exchange or IMAP server.

Open Outlook Settings

Launch the Outlook app on your Galaxy S24 Ultra. Tap your profile icon in the top left corner, then tap the gear icon at the bottom left to open Settings.

Select the Affected Account

Under the 'Mail Accounts' section, tap the specific email account that is failing to receive or send messages.

Reset the Account

Scroll to the bottom of the account settings page and tap 'Reset Account'. The Outlook app will automatically close, restart, and attempt to download your emails from the server.

Reset the Email Account in Outlook Mobile

Sync Completion: Allow a few minutes for the app to download your mailbox data, especially if you have a large history of emails.

Solution 2

Clear Outlook App Cache and Data

Corrupted temporary files in the Android system can prevent the Outlook app from processing outgoing messages or downloading new ones.

Free Microsoft Office alternative

Manage Your Documents Seamlessly with WPS Office

While resolving your Microsoft 365 mobile sync issues, consider using WPS Office for your document management. It is a highly compatible, free suite that easily handles all your productivity needs on mobile and desktop platforms.

1. Download WPS Office: Visit the Google Play Store on your mobile device and search for WPS Office.
2. Install the App: Tap install to add the lightweight document editor to your phone.
3. Edit Seamlessly: Open and edit your Microsoft Office files directly in WPS Office without format conversion.

Fully compatible with Microsoft Word, Excel, and PowerPoint file formats.Lightweight app that saves storage space on your Galaxy S24 Ultra.Free to use with an intuitive interface for seamless mobile editing.Built-in cloud sync for accessing documents across all your devices.

microsoft office alternative - wps office

Frequently Asked Questions

Why is Outlook not syncing in the background on my Android device?

Android's strict battery optimization can pause background syncing. Go to Settings > Apps > Outlook > Battery on your Samsung device and ensure the app is set to 'Unrestricted' so it can fetch emails in the background.

Does uninstalling and reinstalling Outlook delete my emails?

No. When using Microsoft 365, Exchange, or IMAP, your emails are safely stored on the cloud server. Uninstalling the app only removes local data, and your emails will reappear once you sign back in.

How do I check if my Microsoft 365 subscription is causing the sync failure?

Sign in to your Microsoft account via a web browser and navigate to the 'Services & subscriptions' page. If your subscription is expired or suspended, Exchange Online will halt incoming and outgoing email flow.

What should I do if Outlook says 'Log-in Error' when syncing?

This usually indicates an outdated password or a server settings change. Remove the account from the Outlook app settings entirely, then add it back using your most current password and active Microsoft 365 credentials.

Outlook & Email Problems