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Add 365 Full Mailbox not syncing Software & Applications

Charla Geach 2026-01-03 18:19:25 +08:00
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Content<br>
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 [Exchange connectivity diagnostic](https://git.epochteca.com/kristyoverby24/6812fix-mfa-prompts-not-working/-/issues/1) 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.
Here is the strange part I tried to remove the computer from the domain and have Outlook run from a local account for a few days.Check with your email provider for instructions about how to create an app password for your email account.However, his OST file is not anywhere near that size it’s about 5GB.If your password isn't the problem, you might have a certificate error.Now, we will verify the server settings to fix the Outlook synchronization error.
How to Fix Sync Issues in Outlook or OWA? – A Complete Guide
Moreover, it maintains the folder hierarchy and metaproperties of the data when processing Outlook data files. This tool also helps users fix Outlook syncing issues by repairing OST or PST files and syncing the data smoothly. Third-party firewalls or antivirus software might prevent you from syncing your email and calendar events.
Professional automation to resolve Microsoft Outlook syncing issues
Before we know the solutions, we will understand a few common causes of the Outlook sync problem. The most common cause of an out-of-date account is an incorrect password. In the notification bar at the top of the app, select Fix account.
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 [diagnose Office activation conflicts](http://boiler.ttoslinux.org/ramonarubbo341/troubleshoot-outlook-synchronizing-folders-error2021/-/issues/4) 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.
Once you have completed the steps to fix Outlook sync errors, kindly check if the error has been fixed or not. If your password isn't the problem, you might have a certificate error. If so, you'll see a message that says, "There is a problem with the server's security certificate. The security certificate is not from a trusted certifying authority." Check with your email provider for instructions about how to create an app password for your email account. 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.
These are the only two I've seen have this issue and I was wondering if you've seen this and figured out a 'fix'? Tempted to create a Test Shared Mailbox, but thinking that wouldn't be an accurate test for inbound mail, etc. or just actually tested by the Users at all. Upgrade to Microsoft Edge to take advantage of [Outlook Not Sending or Receiving Email](https://gitlab.innive.com/lawrencepapath) the latest features, security updates, and technical support.
However, in some situations these processes can take up to 24 hours.