Azure Sync Delta: A Step-by-Step Guide to Setting Up and Managing

Azure Sync Delta is a powerful tool that enables you to synchronize data between Azure Active Directory (Azure AD) and your on-premises Active Directory. This allows for seamless identity management across both environments.

To get started with Azure Sync Delta, you'll need to download and install the Azure AD Connect tool, which is available for free from the Microsoft Download Center. This tool is used to synchronize user accounts, groups, and other directory objects between your on-premises Active Directory and Azure AD.

Azure Sync Delta supports a variety of synchronization scenarios, including one-way and two-way syncs, as well as incremental and full syncs. By choosing the right sync scenario for your needs, you can ensure that your data is up-to-date and accurate across both environments.

The Azure AD Connect tool also allows you to configure password hash synchronization, which is a key feature of Azure Sync Delta. With password hash synchronization, you can securely synchronize user passwords between your on-premises Active Directory and Azure AD.

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If you're experiencing a Delta Sync Error with Azure AD Connect, it's often due to the scheduler being unable to start.

The error message will look something like this: "The AAD Connect wizard is open by someone." This could be you or a colleague working in a different session on the server.

To find out who's behind the error, use the Get-Process PowerShell command or check TaskManager.

Common issues that can cause Delta Sync errors include assigning Office 365 licenses, managing shared mailbox delegation, configuring calendar permissions, and replicating Azure AD Connect.

Here are some tasks to check:

You can manage synchronization in Azure AD Connect using the Synchronization Service Manager, a GUI application that comes with the Azure AD Connect installation. This tool allows you to troubleshoot synchronization errors and manually start and stop the synchronization.

To force a delta sync using the Synchronization Service Manager, you need to perform six actions: Local Connector – Delta Import, AAD Connector – Delta Import, Local Connector – Delta Sync, AAD Connector – Delta Sync, AAD Connector – Export, and Local Connector – Export.

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Here's a summary of the steps to force a delta sync:

By following these steps, you can manually start and stop the synchronization and troubleshoot any errors that may occur.

Connect Cycles are a crucial part of the synchronization process in Azure AD Connect. They help to ensure that changes made to objects and attributes in on-premises Active Directory are synchronized to Azure Active Directory.

There are two types of sync cycles: Delta Sync and Initial Sync (Full sync). The Initial Sync cycle is a resource-intensive process that synchronizes all objects and attributes from on-premises Active Directory to Azure Active Directory for the first time.

The Delta Sync cycle, on the other hand, is responsible for synchronizing changes made to objects and attributes in on-premises Active Directory to Azure Active Directory. It only processes and transmits the changes that have occurred since the last synchronization.

By default, the Delta Sync cycle runs every 30 minutes in Azure AD Connect. However, this interval can be modified to meet specific requirements.

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Here are the six sync cycles that occur during a Delta or Initial sync cycle:

Understanding Connect Cycles is essential for managing synchronization in Azure AD Connect, and by default, the Delta Sync cycle runs every 30 minutes.

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Managing Synchronization is a crucial task in Azure AD Connect, and there are several ways to do it. You can use the Synchronization Service Manager to force a delta sync.

The Synchronization Service Manager is a GUI application that comes with the Azure AD Connect installation. To use it, you need to select the local connector and click on Run in the sidebar, then choose Delta Synchronization and click Ok.

There are six actions required to force a delta sync in the Synchronization Service Manager: Local Connector – Delta Import, AAD Connector – Delta Import, Local Connector – Delta Sync, AAD Connector – Delta Sync, AAD Connector – Export, and Local Connector – Export.

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The default synchronization intervals for Azure AD are passwords every 2 minutes and object changes every 30 minutes. However, you can force a delta sync manually using PowerShell.

To force a delta sync using PowerShell, you need to run the Start-ADSyncSyncCycle cmdlet with the -PolicyType Delta parameter. This will force a delta sync on demand.

If there is already a sync running, you will get an error message. In this case, you need to run the command to force-close the AzureADConnect process.

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You can change the Azure AD Sync schedule to run at a different interval, but there's a catch - it needs to run at least once every 7 days and no more than once every 30 minutes. So, you can't change it to run every 15 minutes, but you can change it to run once per hour or even once per day.

To change the schedule to run once per hour, you'll need to use the Set-ADSyncScheduler cmdlet. This will update the CustomizedSyncCycleInterval property, but you'll still need to run a delta sync for the changes to take effect.

You can also use the Set-ADSyncScheduler cmdlet to increase the delta sync interval to 31 minutes or more. For example, to change the interval to 45 minutes, you would run the command with the -CustomizedSyncCycleInterval HH:mm:ss parameter. Keep in mind that you'll get a warning saying that the new schedule won't take effect until the next scheduled delta sync.

Here's a summary of the allowed and customized sync cycle intervals:

Remember, if you set the CustomizedSyncCycleInterval to a lower interval than the AllowedSyncCycleInterval, the sync schedule won't take effect.

The Synchronization Service Manager is a powerful tool for forcing a delta sync in Azure AD Connect. It's automatically installed with Azure AD Connect and allows you to troubleshoot synchronization errors and manually start and stop the synchronization.

To access the Synchronization Service Manager, simply open the Start Menu and click on Synchronization Service (located under Azure AD Connect). From there, you can click on Connectors, select the local connector, and then click on Run in the sidebar.

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Forcing a delta sync in the Synchronization Service Manager requires six specific actions. These actions are:

Each of these actions allows you to inspect the changes before executing the synchronization. Once you've made your changes, simply click OK to save the change.