VMware vCenter Server Active Directory Web Services LDAP error on instance ADAM_VMwareVCMSDS

While browsing the vCheck 5 report (Thank you Alan), I noticed the following error:

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

Luckily this error is documented e.g. here and here.

Replace the ‘Port SLL’ REG_SZ key under HKLM\SYSTEM\CurrentControlSet\Services\ADAM_VMwareVCMSDS\Parameters

for a REG_DWORD key with the name ‘Port SSL’ and decimal value 636 (or simlpy create the key)

UPDATE: Thank you David Ho, for the correction =]

Now restart the VMwareVCMSDS service and the error should be gone.

Please note: This is a fix for vCenter Server 4.1 and 5.0 on Windows Server 2008 R2. Running vCenter Server 4.0 on Windows Server 2008 R2 is not supported until Update 3. I got this error after a fresh install of vCenter 5.