For managed environments, we use Intune or Group Policy to force sign-in credential sync and clear old tokens. Boost your SMB’s security and compliance with Microsoft 365 Business Premium. Discover Defender and Purview add-ons for enterprise-grade protection at SMB-friendly pricing. This means that the authentication setup for your sync is no longer valid. This can happen for the a number reasons particularly if your sync authenticates using Delegated Permissions. You will need to have the correct privileges set on your Azure account in order to set up the M365 sync.

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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. Discover how IT leaders can address key Microsoft Copilot questions on cost, deployment, security, and integration to maximize ROI and adoption. In these cases, direct escalation to Microsoft or working with a Microsoft CSP partner, such as TrustedTech, can expedite resolution and minimize downtime. Our licensing engineers can help triage complex problems and ensure you're on the right support path.

What to do when Office 365 password reset doesn’t sync across devices

Real-time collaboration is at the core of Microsoft 365; however, issues can arise due to permissions, software version conflicts, or connectivity problems. Find out what to do if you are having issues with syncing users or groups from Microsoft 365. It seems to be some sort of error with the user not being able to connect and sync with diagnose Office activation conflicts M365 servers. 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 Errors like Event ID 611 point to invalid replication data or outdated software. On the sync server, we open the Synchronization Service Manager and check that the last sync finished without errors.

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

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.

Reviewing Device Sign-In Settings

You can view your repair PST file without data loss inactive users on the Users page and delete them as you see fit. Similarly you should review the Users Deactivated sheet on the sync summary spreadsheet attachment as you can also delete these users to bring your total down. 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. Updating Azure AD Connect to the latest build often fixes known sync issues.



Microsoft 365 is a robust platform, but when problems arise, fast resolution is key to productivity. From sync errors to sign-in challenges and fix MFA prompts not working collaboration setbacks, these common Office 365 troubleshooting techniques can restore service quickly. If you don't wish an inactive user to be made active by the M365 sync, you can add the user's email address to the sync forbid list. You can do this in the Microsoft 365 Sync Wizard on the configuration page of your platform settings. The most common reason for missing users is that you've run a Test Sync, instead of a Manual Sync. If that doesn't resolve your missing users issue, please follow our guide to troubleshooting missing users below.

• The M365 sync establishes a synced dataset based on your M365 data and the filtering configuration of your sync.
• On macOS or iOS, delete stored credentials from Keychain Access.
• You will need to have the correct privileges set on your Azure account in order to set up the M365 sync.
• Checking the sync logs helps confirm password changes are making it everywhere they should.
• Bad settings in Azure AD Connect cause lots of password sync failures.

The mailbox says it migrated okay, but I find it can't be accessed, even by another user created in Office 365. When configuring Azure AD Connect, I chose the options for Pass-through Auth + Seamless SSO + Password Hash sync. 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. You need to login to the correct microsoft account if you need to sync your computer and tablet. TrustedTech is dedicated to being a reliable resource for all software and technology support needs.