Hi everybody,
I manage to resolve that problem, with an unsupported trick...
My problem was that I depromoted a DC and change the Global Catalog, so the 2 links in the SSO server configuration for LDAP were broken, as the ports change if a DC is GC or not...
I reseted the SSO admin password reinstalling SSO server on another machine and export / import the "new" SSO admin password in the production one, as described in this article :
And then, I chnaged the links :
http://adminotes.blogspot.be/2012/12/vsphere-general-system-error-occurred.html
Regards,
Quentin