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on January 12, 2026
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While M365 is highly stable, it’s not immune to occasional disruptions. For details see Identify directory inbox repair tool alternative synchronization errors in Microsoft 365. Users can also convert OST files into various file formats, including PST, HTML, EML, MSG, vCard, etc. It also provides the option to export the Outlook OST file into Office 365 and Live Exchange mailboxes.
Free Methods to Remove Duplicate Items in Outlook 2016
Now, we will verify the server settings to fix the Outlook synchronization error. Once you have completed the steps to fix Outlook sync errors, kindly check if the error has been fixed or not. There can be several reasons for the Outlook synchronization error. Before we know the solutions, we will understand a few common causes of the Outlook sync problem.
Microsoft 365 Outlook Sync Issues on Windows 10 PC
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This tool also helps users fix Outlook syncing issues by repairing OST or PST files and syncing the data smoothly. There are various methods to resolve the Outlook sync issues, including manual and third-party solutions. Firstly, we will discuss a few manual methods to resolve this Outlook error and share the stepwise procedure of each method to successfully fix synchronization issues. Now, let us start with the manual processes to fix Outlook syncing errors. The sync will fail if the total number of all users (active or inactive) on your account exceeds the user limit placed upon it if present.
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What should I do if my User Limit has been exceeded?
So, follow the below steps to reset Microsoft Outlook settings. The M365 sync establishes a synced dataset based on your M365 data and the filtering configuration of your sync. The sync will fail if it can't find any users that comply with your filtering preferences or the system's requirements for user records. The system requires that users have a first name, last name and a valid email address that conforms with your domain lock if enabled. The most common reason for missing users is that you've run a Test Sync, instead of a Manual Sync. If that doesn't resolve your missing users issue, please follow our guide to troubleshooting missing users below.
You need to login to the correct microsoft account if you need to sync your computer and tablet. You will need to have the correct privileges set on your Azure account in order to set up the M365 sync. We go above and beyond the average software reseller because we built our business on trust.
Outlook sync errors with Office 365
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There can be several reasons for the Outlook synchronization error.Users can also try its free demo version in their system and process the first 50 items from each folder freely.There are various methods to resolve the Outlook sync issues, including manual and third-party solutions.Before we know the solutions, we will understand a few common causes of the Outlook sync problem.The sync will fail if the total number of all users (active or inactive) on your account exceeds the user limit placed upon it if present.With apps syncing across devices and cloud services, sync issues are among the most frequently reported M365 problems.The error message in the Summary sheet of the Sync Summary spreadsheet attachment can also highlight the reason for this.
With apps syncing across devices and cloud services, sync issues are among the most frequently reported M365 problems. These can include missing files, ghost icons, or documents that do not update in real-time. With directory synchronization, you can continue to manage users and groups on-premises and synchronize additions, deletions, and changes to the cloud. But setup is a little complicated and it can sometimes be difficult to identify the source of problems. We have resources to help you identify potential issues and fix them. Incorrect Outlook settings can also be one of the reasons behind Outlook synchronization errors.