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Add How to Troubleshoot Common Microsoft 365 Problems and Issues

Laurie Mcdade 2026-01-18 17:27:49 +08:00
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Our relationship to the Microsoft Partner Network allows us to provide competitive pricing and authentic software and support, all with a much-needed human element. On Windows, open Credential Manager, pick Windows Credentials, and remove anything related to Office 365 or Microsoft 365. For managed environments, we use Intune or Group Policy to force sign-in credential sync and clear old tokens.
Here’s a step-by-step approach to help you spot the issue, fix it, and avoid these sync delays down the road.We keep password synchronization reliable by staying proactive and making sure users know how their actions affect access across Microsoft 365 and their devices.When they go back to the message and press send they get an error that the message has been deleted.Once you have completed the steps to fix Outlook sync errors, kindly check if the error has been fixed or not.
Troubleshooting Microsoft 365 sync issues
At NetTech Consultants, we help organizations keep Microsoft 365 running smoothly and securely. The Users Loaded count will be 0 if all users fail to meet the system's requirements for user records. The Users Processed count will be 0 is there are no users in the synced dataset after filtering.
Common Reasons Behind Outlook Sync Issues
If the old password still works, the reset probably hasn’t synced. To resolve these issues you should run the steps in this article and check [work offline mode stuck](https://customerscomm.com/read-blog/129784_how-to-fix-outlook-crashes-in-office-365-a-guide-for-it-admins.html) whether the groups in your sync's filtering preference contain users in Azure AD. The simplest way to resolve authentication issues is to rerun the authentication process by clicking the Sign in with Microsoft on the Microsoft 365 settings page.
Address
Our training has quick guides about what happens after you update your password. For example, you might get signed out or have to reauthenticate on your phone. We also remind users to refresh their Office sign-in token by signing out of all Microsoft apps and signing back in with the new password.
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The Summary sheet on the spreadsheet attachment of your sync summary includes an Updated User Count and User Limit. These figures will give you an impression of how far over the limit the account is. Sync failure alerts do not always include a full summary or attachment, you can run a test sync to obtain this data. 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.
You can stop any accounts from being brought over by adding them to the sync deny list. Please allow me a few minutes to review your question [reset cached Exchange mode](https://1nigeria.radiobenue.be.gov.ng/read-blog/2549_tech-help-amp-troubleshooting-guides.html) to ensure that I don't miss anything. TrustedTech is a Microsoft solutions Partner in the following areas.
On the sync server, we open the Synchronization Service Manager and check that the last sync finished without errors. Azure AD Connect handles password sync, but it runs on a schedule—usually every 30 minutes. So, if you just changed your password, there might be a short window where your old password still works and the new one hasn’t reached every system.
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. Microsoft 365 is a robust platform, but when problems arise, fast resolution is key to productivity. From sync errors to sign-in challenges and collaboration setbacks, these common Office 365 troubleshooting techniques can restore service quickly. After performing these steps, Outlook’s all folders will be synced to the server.
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. Incorrect Outlook settings can also be one of the reasons behind Outlook synchronization errors. We keep password synchronization reliable by staying proactive and making sure users know how their actions affect access across Microsoft 365 and their devices. If sync keeps failing, we make sure the Microsoft Entra Connect service account has the right permissions and the server connects to the domain controller.
We check that the Work or School Account in Windows Settings is active and linked to the right domain. The sync will fail if the groups you selected to load users from no longer exist in Azure AD. Typically this is because the selected groups have been deleted from Azure [how to fix Outlook not opening today](https://devnew.judefly.com/index.php?link1=read-blog&id=41357_tech-help-amp-troubleshooting-guides.html) AD since the M365 sync was configured on your account.