After some research I found this maybe do to a strange Dell issue as we were an all Dell office. It was an issue with ethernet and wireless connected at the same time that would cause the machines to stop being able to connect to 365. A quick look at the Microsoft Entra Connect Health portal helps us see if sync tasks are current and the connection to Microsoft 365 is steady. We also scan Event Viewer logs under Applications and Services Logs → Directory Synchronization for Event IDs like 650–657 (for sync activity). Errors like Event ID 611 point to invalid replication data or outdated software. In these cases, direct escalation to Microsoft or working with a Microsoft CSP partner, such as TrustedTech, can expedite resolution and minimize downtim


Having trouble connecting to your email from Outlook on your desktop? Follow these steps to let Outlook diagnose and fix errors in your Outlook mail profile that might be causing the issue. There is no limitation on the size and version of the original OST file for the online service. If you're using an Exchange email account, you can delete the Outlook Stuck on Synchronizing Folders offline Outlook Data File (.ost) and Outlook will recreate the offline Outlook Data File (.ost) the next time you open Outlook. These same steps will allow you to quickly and correctly import a PST file when migrating from/to Outlook 2016. The online import of the Outlook 2016 PST file is completely similar to the 2019 versio


I could of course import the pst file in Outlook, but I did not wanted to do that, in order to avoid duplicates in Outlook. So, I used Toolbox recovery to convert the pst file in msg, ans I copied and paste the msg files in Outlook, and it worked perfectly. As a result of the online service, you get a working PST file with a copy of the contents from the corrupted database, ready to be imported into a new Microsoft Outlook profil


A remarkably efficient Microsoft Outlook PST file repair tool that combines an intuitive UI and a uniquely capable core. The software a must-have for anyone who wants to know how to repair PST file in Outlook without sharing data with third parties and spending a fortune on their services. I need to convert a large .ost file to a .pst file to set up a new laptop. Recovery Toolbox worked very well and relatively quickly. I wanted to send a Outlook Stuck on Synchronizing Folders large pdf file (20Mb).While sending I disrupted this process (turned off pc?). As a result my pst-file was corrupted and my outlook could no longer be started/opened.This tool fixed PST-fil

If your Outlook OST file isn’t syncing properly with Office 365, you’re not alone. Thousands of users face corrupted OST files, sync errors, and missing mailbox data after system updates or unexpected shutdowns. In this 2025 guide, we’ll show you how to repair the Outlook OST file and restore seamless email performance without losing important data. If your Outlook inbox isn’t refreshing automatically, leaving you waiting for new messages, you’re not alone. Many Microsoft 365 and Outlook users experience email synchronization problems caused by outdated cache, network delays, or improper settings. Here’s a complete 2025 guide to get your mailbox updating in real time again.


By verifying the basics—correct credentials, valid license assignments, and stable network access—you’ll often fix the Outlook Stuck on Synchronizing Folders issue without delving into more complex solutions. Clearing cached credentials, running a repair, or using the Microsoft Support and Recovery Assistant (SaRA) can also address common local device issues. Open apps in Safe Mode to bypass add-ins and check for improvements. Perform a quick repair via "Programs and Features" to optimize performanc


Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. If your admin enabled Modern Authentication (MFA), try disabling it temporarily via Azure Active Directory → Properties. Then re-enable it after successfully signing in. Alternatively, generate an app-specific password if using Outlook 2016 or olde


Replacing the corrupted storage with the recovered one, along with correcting the binding in the Outlook profile, is a reliable practice for fixing error 0x F. Before adding the recovered PST file to Outlook, you must delete the corrupt PST file from Outlook settings or your Windows Mail profile. The steps to access the repair tool vary depending on your operating system. If you can open the original Outlook Data File, you might be able to recover additional items. The Inbox Repair tool creates a backup file with the same name as the original, but with a .bak extension, and saves it in the same folde


Regularly cleaning up your hard drive or upgrading hardware like RAM can also enhance performance. If you are using an outdated web browser or Office app, it can create compatibility issues, which eventually lead to Microsoft 365 sign-in problems. Make sure to update them to the latest version and try again to fix Microsoft 365 login issues. If you Outlook Stuck on Synchronizing Folders are still unsure about the right password and are facing Microsoft 365 login issues, use the Forgot Password option to reset your passwor