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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. 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. This software allows users to process numerous OST files at once without any size limitations. Moreover, it maintains the folder hierarchy and metaproperties microsoft 365 not syncing or working of the data when processing Outlook data files.
You can also choose to have users sign into the Office 365 portal with their work or school account and follow the steps in Install Office on your PC or Mac to install Office themselves. If you're not sure what plan you have, follow the steps in What Office 365 for business subscription do I have? Admins should also see the Office for business tab for more general Office installation issues.
If your subscription hasn't expired, Office will reactivate the subscription the next time you log in. If the Install button is grayed out, your Office 365 subscription might have expired. Select your subscription from the list in Renew Office 365 for business to see the steps for how to renew it.
Read the blog post about using Office 365 on a terminal server. To avoid data loss when using cloud applications, perform Office 365 data backup. NAKIVO Backup & Replication is a universal data protection solution that can protect not only Office 365 but also virtual, physical, and cloud environments.
At the top of your screen, choose Send/Receive, Preferences, Work Offline to change your stats between offline and online modes. If this still does not work, ensure that you are connected to the internet by loading any webpage. If the "Enter Password" window is no longer open, you can navigate to the links below to initiate resetting your password. For more information, see Deactivate Office 365 if you see a "limit reached" error.
Hello, Paulett7086, the first what I would recommend is to check the network connection and network connection settings. Knowing the reasons behind the Outlook sync issues will help us to fix this problem and prevent issues in communication and workflow. Once you have completed the steps to fix Outlook sync errors, kindly check if the error has been fixed or not. 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. After these instructions, ensure the sync settings are correct and check everything is working well.
They can either be simple, like the OneDrive service not running or the missing OneDrive icon on the taskbar, or more complex, like OneDrive conflicting with Microsoft 365. Below we provide a more detailed list of issues and corresponding solutions. If you use Microsoft Office 365 Outlook as a standalone email client, and you cannot send and receive email messages, check the Outlook connection settings. If you want to use Office <a href="https://office365emailfix.blogspot.com/2025/10/fix-outlook-not-sending-or-receiving.html">microsoft 365 not syncing or working</a> 365 applications installed on a terminal server, you should use Office 365 Pro Plus, which supports Shared Computer Activation. Read the blog post about using Office 365 on a terminal server. You can navigate to Sign in - Microsoft OneDrive (live.com) and sign in with your Microsoft account to check OneDrive online.
Users can also try its free demo version in their system and process the first 50 items from each folder freely. Here, we will discuss the five manual methods to fix sync issues in Outlook or OWA. Before finding solutions, we suggest that users check their internet connection. Sometimes, Outlook sync issues can arise because of poor internet connection. If you are still facing this issue, kindly follow the solutions below to fix the sync issues in Outlook. There are various methods to resolve the Outlook sync issues, including manual and third-party solutions.
Try removing and re-adding the problematic calendar to reset the connection. If none of these steps work, consider clearing your Outlook cache or running the calendar repair tool to fix any underlying data issues. Often, the root cause lies in incorrect sharing permissions, where users might not have the appropriate access levels to view or edit calendar entries.
Remember, patience is key when dealing with shared calendar sync issues. Remember, identifying the root cause is the first step to resolving your sync issues. In the following sections, we’ll dive into specific solutions to get your Outlook calendar syncing smoothly again. After rebuilding the OST file, it’s important to check for any missing mailbox data. If you find any missing items in the new OST file, you can recover them from the backup OST file using Stellar Converter for OST. This professional OST to PST converter tool can extract data from the backup OST file and convert it into PST file, which you can easily import into Outlook.