We tackle these by making sure the reset went through, checking Azure AD Connect, and confirming each device uses the right sign-in setup. We keep password synchronization reliable by staying proactive and making sure users know how their actions affect access across Microsoft 365 and their devices. Even when sync works, cached passwords on devices can cause login failures. Windows, Outlook, and mobile apps often save passwords so users don’t have to keep typing them. If a password changes, those caches might still use the old one until you clear them out. The M365 sync establishes a synced dataset based on your M365 data and the filtering configuration of your sync.

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

I have multiple users experiencing sync errors with Outlook and office365. Another which is shown below, is a user opens a new message, or replies to one, and lets it sit for a while. When they go back to the message and press send they get an error that the message has been deleted. Ive repaired the OST and changed cache mode to only cache 1 year. With directory synchronization, you can continue Outlook OST vs PST repair to manage users and groups on-premises and synchronize additions, deletions, and changes to the cloud.

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

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. At NetTech Consultants, we help organizations keep Microsoft 365 running smoothly and securely. We go above and beyond the average software reseller because we built our business on trust. As active members in the IT community, we work to support our clients’ businesses and provide them with peace of mind.

Reviewing Device Sign-In Settings

The Users Processed count will be 0 is there are no users in the synced dataset after filtering. 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 AD since the M365 sync was configured on your account. To get the sync working you will either need to delete users or have the user limit on your connection status shows disconnected account increased. Users I create within the Office 365 portal are fine, so I assume it is something to do with Azure AD Connect. We have reset the router, checked internet speeds, signed in and out of M365 apps, reinstalled apps and checked for Windows updates.

How Much Do Managed IT Services Cost?

Microsoft 365 is a robust platform, but when problems arise, fast resolution is key to productivity. From sync errors to sign-in challenges and Outlook profile repair and recovery steps 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.

Common Causes of Office 365 Password Reset Sync Issues

• You can run a sync manually with PowerShell or the Azure AD Connect tool to make sure updates go through.
• Devices sometimes keep using cached passwords even after a successful sync.
• The mailbox says it migrated okay, but I find it can't be accessed, even by another user created in Office 365.
• The Summary sheet on the spreadsheet attachment of your sync summary includes an Updated User Count and User Limit.
• TrustedTech delivers unbeatable customer service, with experts in licensing and high-level technicians always on-call to answer your tech issues in-depth.
• 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.
• If there’s a delay, we manually trigger a password sync using Microsoft Entra Connect.

You should run a test sync after re-authenticating the sync to ensure it is working. Devices sometimes keep using cached passwords even after a successful sync. 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. If there’s a delay, we manually trigger a password sync using Microsoft Entra Connect.