If you can sync your email when the firewall is turned off, you'll need to allow the Mail and Calendar apps through the firewall. Windows Defender Security Center is free security software that's included with Windows 10. If you haven't installed alternative security software, you should temporarily turn off Windows Defender Security Center. Test other mailbox not updating on IMAP programs or websites to be sure Outlook is the only problem.

Method 4: Recreating the Outlook Profile

Another which is shown below, is a user opens a new message, or replies to one, and lets it sit for a while. When they go back to the message and press send they get an error that the message has been deleted. Ive repaired the OST and changed cache Outlook OST vs PST repair mode to only cache 1 year.

Check the connectivity to your email server

• We have shared five manual methods in this blog to resolve the Outlook syncing errors.
• The client has a computer off the domain at home that his work email is tied to and he has never had any of these issues in Cache mode with that device.
• Once the client started using Outlook again after some time has passed the issue had come back.
• If it does, you might need to include Outlook exceptions in the settings of your security program.
• When they go back to the message and press send they get an error that the message has been deleted.
• After these instructions, ensure the sync settings are correct and check everything is working well.
• Always make sure your profile and settings are set up correctly, your software is up to date, and your connection is steady.
• The other solution to fix Outlook sync issues is recreating Microsoft Outlook profile.

However I do not use Outlook on it as much as I do on my desktop. If you're using an Exchange account that requires advanced settings, you'll need to remove the account and add it again using advanced settings. To add the account using advanced settings, see Add an account using advanced setup. The Support and Recovery Assistant, a tool provided by Microsoft, can identify and resolve common Outlook problems. It is capable of automatically fix MFA prompts not working identifying problems with account setups, sync, and other typical mistakes.

Methods to fix Microsoft Outlook syncing error

In some cases setting up a new computer replacement was the only option to fix these odd Outlook Sync issues. Outlook’s ability to connect to the mail server may be blocked by firewalls or antivirus software. After you’re satisfied, turn off your firewall or antivirus program for a while. If it does, you might need to include Outlook exceptions in the settings of your security program. Users can also convert OST files into various file formats, including PST, HTML, EML, MSG, vCard, etc.

Microsoft Outlook Sync issues

Always make sure your profile and settings are set up correctly, your software is up to date, and your connection is steady. The causes of sync issues and local failures in Outlook are explained in this guide, along with practical troubleshooting and resolution techniques. You can extract and recover all of your mail items to a PST file using sophisticated OST File to PST Converter software if your OST file becomes unavailable or orphaned. Third-party firewalls or antivirus software might prevent you from syncing your email and calendar events. Check the software documentation to learn how to temporarily turn it off.