Security Center 11 - Windows update with WSUS not working

[CvH]

Hi, we have a Kaspersky Security Center 11 (updated from 10) with WSUS enabled (150 clients).

As soon I enable using WSUS at the Kaspersky Agent (Kaspersky acts as WSUS) policy Windows does not find any updates anymore and complains with 0x8024a105 (basically no connection to update server).

 

As soon I disable WSUS it works again at the client. The Updateurl looks also okay i guess.

I checked that we have the latest Windows Updates synced etc but nothing seems to work.

 

Currently I have no idea where to look, I find no logs or warnings about it at all.

Running klnagchk at clients outputs no errors.

 

Is there any way to get some logs or do I miss something that is additional needed ?

 

best regards