Error: server does not support requested critical extension

[Nigel Archer]

Hi,
We have a production environment building Windows 2003 Server Sp1 into an
enterprise active directory. Occassionally this week a ADSI, C++, COM object
has been doing it's usual search for the server object in the AD and
sometimes it is now returning this LDAP error
(Error_DS_unavailable_Crit_Extension 8236). We are not sorting on
distinguished name and we do have servers running the same code in the same
environment that don't have this error. It will also sometimes work on the
same server if it is run again. So it looks like an environment\connectivity
issue but we don't know what is causing it.
The query is:
(&(objectClass=*)(objectCategory=computer)(dNSHostName=server.domain.net)(frsComputerReferenceBL=*)(operatingSystem=*Server*))

Any ideas?

TIA
Nigel

[Prahalad Deshpande]

Hi Nigel,

I am also dealing with a similar issue. However here I found some Microsoft
KB article that says that the error is a issue with Microsoft products.

The KB article can be found at :

http://support.microsoft.com/kbid=842637

Post by Nigel Archer
Hi,
We have a production environment building Windows 2003 Server Sp1 into an
enterprise active directory. Occassionally this week a ADSI, C++, COM object
has been doing it's usual search for the server object in the AD and
sometimes it is now returning this LDAP error
(Error_DS_unavailable_Crit_Extension 8236). We are not sorting on
distinguished name and we do have servers running the same code in the same
environment that don't have this error. It will also sometimes work on the
same server if it is run again. So it looks like an environment\connectivity
issue but we don't know what is causing it.
(&(objectClass=*)(objectCategory=computer)(dNSHostName=server.domain.net)(frsComputerReferenceBL=*)(operatingSystem=*Server*))
Any ideas?
TIA
Nigel

[Nigel Archer]

Thanks Prahalad. Unfortunately I am not sorting on distinguished name but
that article is useful if others are doing that and getting the critical
extension error.

Post by Prahalad Deshpande
Hi Nigel,
I am also dealing with a similar issue. However here I found some Microsoft
KB article that says that the error is a issue with Microsoft products.
http://support.microsoft.com/kbid=842637

Post by Nigel Archer
Hi,
We have a production environment building Windows 2003 Server Sp1 into an
enterprise active directory. Occassionally this week a ADSI, C++, COM object
has been doing it's usual search for the server object in the AD and
sometimes it is now returning this LDAP error
(Error_DS_unavailable_Crit_Extension 8236). We are not sorting on
distinguished name and we do have servers running the same code in the same
environment that don't have this error. It will also sometimes work on the
same server if it is run again. So it looks like an environment\connectivity
issue but we don't know what is causing it.
(&(objectClass=*)(objectCategory=computer)(dNSHostName=server.domain.net)(frsComputerReferenceBL=*)(operatingSystem=*Server*))
Any ideas?
TIA
Nigel