Client not getting Updates

[westede]

Hello together,

we got some issues with a few clients. The problem is, that they won't get pending updates. New Clients work without any problems.

 

What i already did:

- Completely removed the sccm client manual remove client (technet)

- removed the client from sccm console and wsus

- reboot the system

- fresh install of sccm client

 

How does the problem express itself:

- WSUS Server generates a Report with missing updates

- Compatibility Report for a specified client in SCCM is empty (new clients generating a report)

- Client Logs 

- - WUAHandler: Async searching completed

- - ReporingEvents (SoftwareDistribution): CcmExec    Success    Software Synchronization    Windows Update Client successfully detected 295 updates.

 

Has anyone some ideas to solve the problem...?

 

Thanks a lot ...