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"Unable to connect to the Synchronization Service" error when you try to open Miisclient.exe in the Azure Active Directory Sync installation folder

When you try to open Miisclient.exe in the Microsoft Azure Active Directory Sync installation folder, you get the following error message:

Unable to connect to the Synchronization Service.

Some possible reasons are:

1) The service is not started

2) Your account is not a member of a required security group.

See the Synchronization Service documentation details.
This issue occurs for one of the following reasons:
  • The installation of the Directory Sync tool isn't completed.
  • The user account that you used to log on to the computer doesn't have sufficient permissions to open or to perform tasks in Microsoft Forefront Identity Manager (FIM).
To resolve this issue, log off from and then log back on to the computer. If this issue persists after you log off and then log back on, follow these steps:
  1. Click Start, right-click Computer, and then click Manage.
  2. Under Computer Management, expand Local Users and Groups, and then expand Groups.
  3. Make sure that the MIISAdmins group exists. If the group is missing, create a group that's named MIISAdmins.
  4. Add yourself to the group.
  5. Log off from the computer, and then log on to establish the new group membership in the access token.
If this issue persists after you perform these steps, contact Support. You may have to reinstall the Directory Sync tool.
Still need help? Go to the Office 365 Community website or the Azure Active Directory Forums website.

Article ID: 2791422 - Last Review: 12/12/2014 09:53:00 - Revision: 14.0

Microsoft Azure cloud services, Microsoft Azure Active Directory, Microsoft Office 365, Microsoft Intune, CRM Online via Office 365 E Plans, Microsoft Azure Recovery Services, Office 365 Identity Management

  • o365 o365e o365a o365022013 o365m KB2791422