However once I joined this computer back to the domain and let it sit for a few days it was also working fine. Once the client started using Outlook again after some time has passed the issue had come back. I ran the PSTscan tool to check for anomalies on the OST file (which it found and repaired but the issue still occurs).

The client has a computer off the domain at home that his work email is tied to and he has never had any resolve Outlook not sending emails fast of these issues in Cache mode with that device. After performing these steps, Outlook’s all folders will be synced to the server. If this method doesn’t work for you, navigate to other solutions. Select the button below to launch a diagnostic in the Microsoft 365 admin center.

• To make sure there are no issues, click Test Account Settings to test the connection.
• To fix the issue, please try each of the following solutions in order.
• There are various methods to resolve the Outlook sync issues, including manual and third-party solutions.
• Here, we will discuss the five manual methods to fix sync issues in Outlook or OWA.
• If you still can't sync your email after removing your account and adding it again, you might need to add the account using advanced setup.
• If this method doesn’t work for you, navigate to other solutions.

How to Fix Sync Issues in Outlook or OWA? – A Complete Guide

Check the software documentation to learn how to temporarily turn it off. Firewalls and antivirus software might prevent you from syncing your email and calendar events. There are various methods to resolve the Outlook sync issues, including manual and third-party solutions.

Professional automation to resolve Microsoft Outlook syncing issues

If there's a feature you think is missing from the Mail and Calendar apps, or if a feature in isn't working properly, you can provide feedback directly to the Mail and Calendar team. Two-factor authentication helps protect your account by making it more difficult for someone else to sign in. It verifies your identity using your password and a contact method (also known as security info).

Method 5: Fixing Sync Issues in Outlook Web Access (OWA)

I’ve tried to set cache mode from 1 year all the way down to a few days. However, with one particular client no matter what changes are made these sync issue still occur. After these instructions, ensure the sync settings are correct and check everything is working well. To make sure there are no issues, click Test Account Settings to test the connection. Test other programs or websites to be sure Outlook is the only problem.

Delays in provisioning of user/mailbox or synchronizing changes in Exchange Online

Now, we will verify the server settings to fix the Outlook synchronization error. 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.

Check your privacy settings

After the files get repaired, restart the Outlook program to ensure that the Outlook syncing issues are resolved or not. I still have it turned on on clear Outlook credentials manager my laptop and it has not shown any issues yet. However I do not use Outlook on it as much as I do on my desktop.





If I check the sync log I see a lot of sync errors for Inbox, sent items and a few other folders. If the size of your .ost file is close to the limit, you could try increasing the limit on your client, restart Outlook and see if there is any difference. There can be several reasons for the Outlook synchronization error.

The Support and Recovery Assistant, a tool provided by Microsoft, can identify and resolve common Outlook problems. It is capable Outlook Login Issues Troubleshooting of automatically identifying problems with account setups, sync, and other typical mistakes. To solve your Outlook issues, download the application from the Microsoft website and follow the directions. We’ve had sync issues with employees from time to time however, re doing the mail profile or wiping the Windows profile usually fixes it. In some cases setting up a new computer replacement was the only option to fix these odd Outlook Sync issues.



However, in some situations these processes can take up to 24 hours.