"An unknown error occurred with the Microsoft Online Services Sign-in Assistant" error when you run the Azure Active Directory Sync Tool Configuration Wizard

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Article ID: 2502710 - View products that this article applies to.
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PROBLEM

When you run the Microsoft Azure Active Directory Sync Tool Configuration Wizard, you receive the following error message:
An unknown error occurred with the Microsoft Online Services Sign-in Assistant. Contact Support.

SOLUTION

To resolve this issue, follow these steps:
  1. Click Start, type appwiz.cpl, and then press Enter to open the Programs and Features item in Control Panel.
  2. Uninstall the Microsoft Online Services Sign-In Assistant.
  3. Uninstall the Azure Active Directory Sync tool.
  4. Reinstall the Azure Active Directory Sync tool. For more information about how to do this, go to Install or upgrade the Directory Sync tool.
  5. Check whether the issue is resolved. If the error still occurs after you follow steps 1 through 4, make sure that the Microsoft Online Services Sign-In Assistant service is started. To do this, follow these steps:
    1. Click Start, type services.msc, and then press Enter.
    2. In the list of services, make sure that the entry in the Status column for Microsoft Online Services Sign-In Assistant is Started.

MORE INFORMATION

Still need help? Go to the Office 365 Community website or the Azure Active Directory Forums website.

Properties

Article ID: 2502710 - Last Review: July 9, 2014 - Revision: 23.0
Applies to
  • Microsoft Azure
  • Microsoft Office 365
  • Windows Intune
  • CRM Online via Office 365 E Plans
  • Microsoft Azure Recovery Services
  • Office 365 Identity Management
Keywords: 
o365 o365a o365e o365m o365022013 KB2502710

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