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on January 25, 2026
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We have resources to help you identify potential issues and fix them. 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. This software also has a splitter option to split large-sized PST files into smaller ones, helping users prevent oversized PST file issues. 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.
Professional automation to resolve Microsoft Outlook syncing issues
This software allows Exchange connectivity diagnostic users to process numerous OST files at once without any size limitations. 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. The other solution to fix Outlook sync issues is recreating Microsoft Outlook profile. Follow each step carefully to resolve synchronization errors.
Before we know the solutions, we will understand a few common causes of the Outlook sync problem.Users can also try its free demo version in their system and process the first 50 items from each folder freely.After performing these steps, Outlook’s all folders will be synced to the server.We have resources to help you identify potential issues and fix them.After you’re satisfied, turn off your firewall or antivirus program for a while.When the user is signed into their mobile app, webmail, or the Windows Mail app, they are able to receive email perfectly fine with those.
Outlook sync errors with Office 365
It is capable 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. Now, we will verify the server settings to fix the Outlook synchronization error. Outlook’s ability to connect to the mail server may be blocked by firewalls or antivirus software.
Method 4: Recreating the Outlook Profile
Outlook sync reset cached Exchange mode issues can be because of corrupted Outlook OST or PST files. Therefore, now we will know the steps to repair the Outlook data file. 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.
How do I get Microsoft Entra Connect tool?
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 inbox repair tool alternative fix synchronization issues. Now, let us start with the manual processes to fix Outlook syncing errors. If users are facing syncing issues in Outlook due to corrupt Outlook data files, they must choose a professional tool, like Shoviv OST to PST Converter Tool.
I have multiple users experiencing sync errors with Outlook and office365. 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 mode to only cache 1 year. The Support and Recovery Assistant, a tool provided by Microsoft, can identify and resolve common Outlook problems.