Outlook: Email Not Syncing or Missing Emails

If Outlook isn't showing new emails, seems stuck, or you're missing messages that others have sent you, work through these steps. Step 1: Check your internet connection Outlook needs an active internet connection to sync. Look at the bottom status bar in Outlook — if it says "Disconnected" or "Trying to Connect," start there. Step 2: Check the Send/Receive status At the bottom of Outlook, it should say "All folders are up to date." If not, press F9 or go to the Send/Receive tab and click "Send/Receive All Folders." Step 3: Check you're looking at the right folder Emails from unknown senders sometimes land in Junk Email. Check that folder, and also make sure filters aren't hiding messages (View > Current View > Reset View). Step 4: Make sure Outlook is not in Offline Mode Go to the Send/Receive tab. If "Work Offline" is highlighted/active, click it to disable offline mode. Step 5: Repair your email account Go to File > Account Settings > Account Settings. Select your email account and click "Repair." Walk through the repair wizard — it will reconnect and re-verify your account settings. Step 6: Clear the Outlook cache Sometimes Outlook's local data file gets corrupted. 1. Close Outlook 2. Open Control Panel > Mail > Email Accounts 3. Click your account > More Settings > Advanced 4. Note the data file location, then close 5. Browse to that file (.ost), rename it to .old (don't delete it) 6. Reopen Outlook — it will rebuild the cache automatically (may take a few minutes) Step 7: Check Mailbox storage If your mailbox is full, new emails won't sync. In Outlook, go to File > Info and check your mailbox size. Contact us if you need storage increased.