Entra Connect Sync is one of two [[Entra Sync]] agent options. > [!Note] > Azure AD Connect V1 has been retired as of August 31, 2022 and is no longer supported. Azure AD Connect V1 installations may **stop working unexpectedly**. If you are still using Azure AD Connect V1, you need to upgrade to Microsoft Entra Connect V2 immediately.^[[Introduction to Microsoft Entra Connect V2 | Microsoft Learn](https://learn.microsoft.com/en-us/entra/identity/hybrid/connect/whatis-azure-ad-connect-v2)] ## Azure AD Connect V1 Upgrade^[https://aka.ms/aadconnectupgrade] ## Uninstall Microsoft Entra Connect Uninstall from Control Panel^[[Uninstall Microsoft Entra Connect | Microsoft Learn](https://learn.microsoft.com/en-us/entra/identity/hybrid/connect/how-to-connect-uninstall)] ## Enable/disable Scheduler If you need to make configuration changes, then you want to disable the scheduler. For example, when you [configure filtering](https://learn.microsoft.com/en-us/entra/identity/hybrid/connect/how-to-connect-sync-configure-filtering) or [make changes to synchronization rules](https://learn.microsoft.com/en-us/entra/identity/hybrid/connect/how-to-connect-sync-change-the-configuration).^[[Microsoft Entra Connect Sync: Scheduler | Microsoft Learn](https://learn.microsoft.com/en-us/entra/identity/hybrid/connect/how-to-connect-sync-feature-scheduler#disable-the-scheduler)] ```PowerShell Set-ADSyncScheduler -SyncCycleEnabled $false ``` ```PowerShell Set-ADSyncScheduler -SyncCycleEnabled $true ``` ## Start Manual Sync ```PowerShell Start-ADSyncSyncCycle -PolicyType Delta ``` ## Passthrough Authentication (AD Connect Authentication Agent) Pass-through Authentication signs users in by validating their passwords directly against on-premises [[Windows Active Directory (AD)|Active Directory]].^[[Microsoft Entra pass-through authentication - Quickstart | Microsoft Learn](https://learn.microsoft.com/en-us/entra/identity/hybrid/connect/how-to-connect-pta-quick-start)] ### Disable Passthrough Authentication [Disable pass-through authentication by using Microsoft Entra Connect or PowerShell | Microsoft Learn](https://learn.microsoft.com/en-us/entra/identity/hybrid/connect/how-to-connect-pta-disable-do-not-configure) If you do NOT have an Authentication Agent installed 1. Sign in to the [Microsoft Entra admin center](https://entra.microsoft.com/). 2. Download and install the latest Auth Agent. If you DO have an Authentication Agent installed 1. ```PowerShell cd "C:\Program Files\Microsoft Azure AD Connect Authentication Agent" ``` 2. ```PowerShell Import-Module .\Modules\PassthroughAuthPSModule ``` 3. ```PowerShell Get-PassthroughAuthenticationEnablementStatus ``` 4. ```PowerShell Disable-PassthroughAuthentication ```