For a few days I'm not able to check for new updates from my WSUS server, I always get an error 8024400E. Strangely if I check for updates from Microsoft Update I've got no error.
A few computers (and servers) at my location got the same problem.
Today I've tired the workaround published by Cecilia Cole (WSUS Program Manager) and it WORKED !
Many thanks Cecilia,
Source : Client/Server Synchronization issues
