Login & Sync Errors: Personal & Business Microsoft 365 Accounts on Same Device Microsoft Q&A

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That leaves people locked out with their new password on the cloud but not locally.



Office 365 sync problems and login fixes

While M365 is highly stable, it’s not immune to occasional disruptions. We keep password synchronization reliable by staying proactive and making sure users know how their actions affect access across Microsoft 365 and their devices. We start by checking that Azure AD Connect is running and password sync is enabled.

Calendar Sync Issues in Outlook



For example, you might get signed out or have to reauthenticate on your phone. For managed setups, we can push a PowerShell script with Intune or Group Policy to clear cached tokens on all devices. Devices sometimes keep using cached passwords even after a successful sync. We check that the Work or School Account in Windows Settings is active and linked to the right domain. If there’s a sync error, we disconnect and reconnect the account. We usually check settings like Password Outlook Not Sending or Receiving Email Writeback, Synchronization Rules Editor, and Service Account Permissions to spot misconfigurations.

Proactive Services



Office 365 sync problems and login fixes

Bad settings in Azure AD Connect cause lots of password sync failures. If password writeback isn’t enabled or the service account doesn’t have the right permissions, new passwords won’t update in Active Directory. That leaves people locked out with their new password on the cloud but not locally. We show users how to reset passwords using approved methods like the Microsoft 365 portal or self-service password reset (SSPR). If someone changes their password only in the cloud or just on a local system, things can get out of sync pretty quickly. Outdated credentials get stuck on devices, password sync gets turned off, or Microsoft Entra Connect just doesn’t update like it should.

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Office 365 sync problems and login fixes

If you are facing common office 365 problems after update, we can troubleshoot the root cause and roll back or fix configurations without affecting your data. Many users post their problems Microsoft Outlook Email Repair Tool Online and solutions in official Microsoft forums. You might find someone who faced a similar issue and solved it using a different approach that works better in your situation. If you're still having issues, try unlinking/relinking your OneDrive account or use our guided support troubleshooting tool below. TrustedTech is a Microsoft CSP Direct Bill Partner with all six Solutions Partner designations and decades of expertise in licensing, support, and cloud infrastructure.

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  • You also learned simple troubleshooting steps you can try on your own, along with when it makes sense to bring in expert help.
  • You might find someone who faced a similar issue and solved it using a different approach that works better in your situation.
  • With apps syncing across devices and cloud services, sync issues are among the most frequently reported M365 problems.
  • If your problems started after a system or app update, consider rolling back to a previous version or checking for patches that address the issue.
  • On the sync server, we open the Synchronization Service Manager and check that the last sync finished without errors.
  • Running the Azure AD Connect Health tool gives you alerts for sync errors and interruptions.
  • Technical Specialist with 3+ years of experience in implementing IT infrastructure, AI-driven automation and supporting digital innovation.


If users access multiple apps with the same login, we make sure Single Sign-On (SSO) settings line up so the new password works everywhere in Microsoft 365. First, we check that the password reset finished in Microsoft 365 or Microsoft Entra ID. The user should log in to the Office 365 web portal with the new password. If the old password still works, the reset probably hasn’t synced. We tell users to sign out completely and remove stored credentials from Windows Credential Manager or their device’s keychain. Sometimes, rejoining the device to Azure AD or just reauthenticating in Office apps does the trick.





You are gaining a trusted IT partner who genuinely wants your business to run smoothly every single day. Instead, we will look at your Microsoft 365 environment and provide solutions tailored to your setup. As a verified Microsoft Partner, we stay updated with the latest features, patches and Office 365 known issues today. This means we know how to fix problems fast and with full accuracy.

Support for Office 365 Problems After Update

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