Microsoft sync service

Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Feedback will be sent to Microsoft: By pressing the submit button, your feedback will be used to improve Microsoft products and services. Privacy policy. You discover that one or more Azure AD Connect services don't start. Select Start , enter gpedit. You can also try to find and fix the problem by scanning the application and system events in the directory synchronization logs.

You might not be able to pause the active downloads or resume downloads that have failed. Microsoft Sync Framework is a comprehensive synchronization platform that enables collaboration and offline scenarios for applications, services, and devices. Using Microsoft Sync Framework, developers can build applications that synchronize data from any source using any protocol over any network.

Details Note: There are multiple files available for this download. Once you click on the "Download" button, you will be prompted to select the files you need. File Name:. Date Published:. File Size:. System Requirements Supported Operating System. Install Instructions Important: Please uninstall all prerelease versions of Sync Framework prior to installing this release version.

This includes Sync Framework 2. Sync Framework 2. Please ensure that you download and install the SDK appropriate for your system. For example, SyncSDK-v2. It is not possible have full bit Sync Framework 2. See Sync Framework Tips and Troubleshooting topic for details. Make sure you have the latest service pack and critical updates for the version of Windows that you are running. These accounts are encrypted before they are stored in the database. If you need to change the service account password you can use the procedures in Abandoning the ADSync service account encryption key to accomplish this.

These procedures should also be used if you need to abandon the encryption key for any reason. First, you need to change the password under the Windows Service Control Manager. Until this issue is resolved you will see following errors:. Second, under specific conditions, if the password is updated, the Synchronization Service can no longer retrieve the encryption key via DPAPI.

You will see errors such as:. To ensure that you do not receive these errors, follow the procedures in Abandoning the ADSync service account encryption key when changing the password. The following procedures only apply to Azure AD Connect build 1. This cannot be used for newer versions of Azure AD Connect because abandoning the encryption key is handled by Azure AD connect itself when you change the AD sync service account password so the following steps are not needed in the newer versions.

Stop the Synchronization Service. Abandon the existing encryption key. Reinitialize the password of the ADSync service account. Start the Synchronization Service.