vCenter ADWS error

After checking the logs of my newly installed vCenter host (on ESXi 5.1 server) I came across the following error:

Sep 27 02:33:23 1.2.3.4 ADWS[1209] Category:ADWS Instance Events; User:; Active Directory Web Services encountered an error while reading the settings for the specified Active Directory Lightweight Directory Services instance. Active Directory Web Services will retry this operation periodically. In the mean time, this instance will be ignored.Instance name: ADAM_VMwareVCMSDS

also in the Windows event viewer this error was easy to spot:

Log Name: Active Directory Web Services
Source: ADWS
Date: 9/27/2012 12:58:23 PM
Event ID: 1209
Task Category: ADWS Instance Events
Level: Warning
Keywords: Classic
User: N/A
Computer: host
Description:
Active Directory Web Services encountered an error while reading the settings for the specified Active Directory Lightweight Directory Services instance. Active Directory Web Services will retry this operation periodically. In the mean time, this instance will be ignored.

Instance name: ADAM_VMwareVCMSDS

To resolve this error open regedit and go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\ADAM_VMwareVCMSDS\Parameters
Find and delete the parameter called “Port SSL” and recreate it as DWORD (same name) and with the value 636 (decimal)
After restarting the “Active Directory Web Services” service the error should be gone.

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