When emails don’t sync between Outlook and your online account, it’s often due to outdated authentication or connection settings.For Microsoft 365 users, go to File → Account Settings → Server Settings and ensure your account uses Exchange or OAuth authentication.For Gmail, enable IMAP in Gmail Settings → Forwarding and POP/IMAP, then create an App Password…
If Outlook keeps crashing or refuses to open, try running it in Safe Mode.Press Win + R, type outlook.exe /safe, and hit Enter. If it opens fine, one of your add-ins is likely causing the crash — disable them one by one from File → Options → Add-ins.You can also repair Office from Control Panel…