Microsoft AD spoke - AD integration

[servicenow begi]

I am working AD integration, using microsoft AD spoke.

Pre req:

1. Ensure that Active Directory Web Services (ADWS) is deployed in the same server where Microsoft AD is installed. - DONE
2. In the MID Server and Microsoft AD server, run these PowerShell commands to install the Active Directory module: - DONE
PS> Import-Module ServerManager
PS> Install-WindowsFeature -Name RSAT-AD-PowerShell
3. MID and Microsoft AD must be installed on different servers. - CHECKED AND DONE

Even after checking about three point, AD connection is not working. Do I need to check any additional details, like any specific port that needs to be open to connect to microsoft AD.
By default system takes 135 Port,does it mean, I need to open PORT 135 on the midserver to connect the target host AD server.
I am getting "authentication error". Kindly help







[Sukraj Raikhraj]

Did the AD domain validate the credential works? 

[servicenow begi]

Hi Sukraj,

How can we test if the AD omain validates the credentails?

[Manoj87]

Test connection will fail with Authentication failed error, but you can still proceed and test credentials by running flow action (e.g. Add User to Group ) it will work.

[KirilD]

actually the Test credential most probably is using some workflow, which fails, that does not mean your credential is not properly configured. You can always check with AD team if your credential is valid. Try the connection test from the Credential Store.