Outlook app is always out of sync

Why is my Outlook app always out of sync? When people send me emails it can take a few hours before they show up in the app, but when I go to the website or the app on my phone the emails are there r...

outlook for windows

Michelle_Scott77

Brass Contributor

Oct 28, 2026

Since the messages arrive immediately on the website and your phone, mail delivery is working—the delay is in the desktop app.

First, clear any search or filters and check both Focused and Other, if enabled, to rule out messages being hidden.

If you use classic Outlook for Windows, check the status bar for Working Offline, Disconnected, or Trying to connect. Under Send/Receive, make sure Work Offline isn’t enabled, then click Send/Receive All Folders. Note any error rather than waiting for it to catch up.

If you use new Outlook for Windows, close it and try Settings > Apps > Installed apps > Outlook (new) > Advanced options > Repair, if available. Choose Repair, not Reset, initially.

If it continues, please specify whether this is classic Outlook, new Outlook, or Outlook for Mac, and which email provider you use. The next sync checks differ considerably. Using webmail in the meantime is a sensible workaround.

PHANTOM-40417

Copper Contributor

Oct 28, 2026

I am using outlook email. I repaired the app. It might take a few days to see if anything was fixed because the issue comes and goes. I'll check back after a few says to see if this was the solution.

Thanks.

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Outlook app is always out of sync