AADConnect : Unable to connect to the Synchronization Service Manager

April 24, 2021April 21, 2021 by albandrod, posted in AAD, troubleshooting

This is a reminder to myself, long time ago I needed to configure an ADConnect service, since today. I used other account to configure the service, but when I tried to access to the server with another account I was receiving the follwing error:

Unable to connect to the Synchronization Service.

Some possible reasons are:

The service is not started.
Your account is not a member of a required security group.

See the Synchronization Service documentation for details

Solution:

Check if the Microsoft Azure AD Sync Service is started

Check is your account is a member of the local ADSyncAdmins and/or ADSyncOperators group,if not, add the current user to this group and logoff and logon again !

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