
Recently, a number of users have reported that they are having trouble syncing Yahoo Mail with Microsoft Outlook. If the botched-up syncing has derailed your emails as well, you’ve landed at the right spot to resolve the problem. Read on to try out these 7 viable tips to make Yahoo and Outlook sync with each other seamlessly.
Best Tips & Tricks to Fix Yahoo Not Syncing With Outlook
As per the complaints, Yahoo emails, calendar entries, or contacts fail are unable to update in Outlook. This disrupts productivity, especially if you rely on Outlook for work or personal organization. From what I’ve experienced, the problem often stems from outdated credentials, incorrect IMAP settings, or even two-step verification blocks.
1. Check Your Yahoo Account Password
Right off the bat, I’d like to state that Outlook won’t be able to sync your Yahoo Mail if the password saved in the app is incorrect or outdated. So, tick this important solution before moving any further.
- If you’ve recently changed your Yahoo password, update it in Outlook by going to File > Account Settings > Choose the specific account > Change and re-enter your correct credentials.
- Note that incorrect passwords lead to authentication failure, making it impossible to sync incoming or outgoing emails.
2. Enable “Allow Apps That Use Less Secure Sign In” in Yahoo
Some versions of Outlook don’t support OAuth, Yahoo’s newer secure sign-in method. Therefore, it’d be helpful to allow apps, which use less secure sign in, to go about their job without any hindrance.
- To fix this, go to your Yahoo Account Security settings and enable access for less secure apps.
- This allows Outlook to connect to Yahoo servers using basic authentication protocols.
3. Use an App Password Instead of Your Yahoo Login
Yahoo may block sign-ins from Outlook due to security reasons, especially if two-factor authentication (2FA) is enabled.
- Visit your Yahoo Account Security page and generate an App Password specifically for Outlook.
- Use this app password instead of your regular password in Outlook for smooth syncing.
4. Verify IMAP and SMTP Settings in Outlook
Keep in mind that misconfigured server settings can prevent syncing altogether. Make sure that you’ve entered the right IMAP and SMTP server details:
- Incoming Mail (IMAP): imap.mail.yahoo.com, Port: 993, SSL: Yes
- Outgoing Mail (SMTP): smtp.mail.yahoo.com, Port: 465 or 587, SSL: Yes, Authentication: Required
- These settings allow Outlook to correctly fetch and send Yahoo emails.
5. Update Outlook to the Latest Version
Be warned that an outdated Outlook client may lack compatibility fixes or support for Yahoo’s latest security features.
- Head over to the File menu > Office Account > Update Options > Update Now to ensure you’re running the latest version.
- Staying updated helps prevent bugs and improves syncing reliability.
6. Remove and Re-add Your Yahoo Account in Outlook
No luck as yet? Now, I’d suggest you remove and re-add your account in Outlook. Note that sometimes the account setup gets corrupted or stuck.
- To get it done, remove your Yahoo account from Outlook via File > Account Settings > Remove, and then add it again using the correct settings.

- Re-adding the account can reset any hidden issues affecting synchronization.
6. Disable Firewall or Antivirus Temporarily
It’s no secret that overly aggressive security software can block Outlook from connecting to Yahoo’s servers.
- Hence, temporarily disable your firewall or antivirus and check if syncing works.
- On your Mac, go to the System Settings > Network > Firewall and disable it.

- On your PC, head into the Settings app > Privacy & security > Windows Security to disable the firewall.
- If this resolves the issue, add Outlook as an exception to allow normal operation without disabling protection permanently.
Wrapping up…
And that’s pretty much it! Yahoo not syncing with Outlook can be a major headache, but with the right troubleshooting steps, the issue is usually easy to fix. Whether it’s updating credentials, adjusting server settings, or dealing with security blocks, each solution above targets a common cause of the syncing problem.
Make sure to follow them step by step, and you’ll likely be back to receiving and sending Yahoo emails through Outlook in no time. If all else fails, consider contacting Yahoo or Microsoft support for more advanced help.