Error when configuring Microsoft Entra ID Connect

Question

I am trying to setup Microsoft Entra ID Connect and I am receiving an error:

"An error ocurred executing Configuration ADD Sync task: An error occurred while sending the request."

As a result, I can see that my internal domain was added at Entra ID:

An user was created:

But as you can see in the first screenshot, the sync is failing.

Environment:

AD: Windows 2019

Note: I have already reinstalled the "Azure AD Connect" app and tried the customized and also express option, but I am always getting the same error.

How can I resolve this issue?

Thank you,

Claudio

Answer 1

Thanks for your question.

This is likely as a result of TLS 1.2 not being selected and used by Connect. Run the script below to enforce this:

https://learn.microsoft.com/en-us/entra/identity/hybrid/connect/reference-connect-tls-enforcement#powershell-script-to-enable-tls-12

The above should fix the issue.

A lesser possibility is if you have a proxy. In that case see: https://learn.microsoft.com/en-us/entra/identity/hybrid/connect/tshoot-connect-connectivity#connectivity-issues-in-the-installation-wizard

You can mark it 'Accept Answer' and 'Upvote' if this helped you

Regards,

Abiola