# AD Connect Provide the password of the AD DS Connector account 1. Start the Synchronization Service Manager (START → Synchronization Service). 2. Go to the Connectors tab. 3. Select the AD Connector that corresponds to your on-premises AD. ... 4. Under Actions, select Properties. 5. In the pop-up dialog, select Connect to Active Directory Forest: From <[https://www.google.com/search?q=AD+Connect+change+synchronization+account&rlz=1C1ONGR\_enUS963US963&oq=AD+Connect+change+synchronization+account&aqs=chrome..69i57.8829j0j7&sourceid=chrome&ie=UTF-8](https://www.google.com/search?q=AD+Connect+change+synchronization+account&rlz=1C1ONGR_enUS963US963&oq=AD+Connect+change+synchronization+account&aqs=chrome..69i57.8829j0j7&sourceid=chrome&ie=UTF-8)> AD ADD Sync Start-ADSyncSyncCycle -PolicyType Delta Get-date Reinstall: Found problems with reinstall and today I was able to work around it by removing these items to allow the installation to think it was not installed prior: Prior to today (4/5/2022) yesterday I uninstalled and then restarted the server overnight. HKEY\_LOCAL\_MACHINE\\SOFTWARE\\Classes\\Installer\\Products Inside of this key was a couple of entries that linked to AD Connect. In removed the sub-keys (not "Products") This folder must also be empty: C:\\Program Files\\Microsoft Azure AD Sync\\Data Once those 2 areas were cleared I was able to get it to install.