SSL Diagnostic (MS's tool) returns the following:
#WARNING: AcquireCredentialsHandle failed with error -2146893051(0x80090305)
And LSASRV now returns an Event 5000 in the System Event Log with the
description of:
The security package Microsoft Unified Security Protocol Provider generated
an exception. The package is now disabled. The exception information is the
data.
Of course Windows Update (as well as Microsoft) has been down all day today
and we can only go and view the Update History.
Anyone got any suggestions ?
So far, this seems to have fixed the problem. So perhaps there was an error
in the file when it was updated or something else. But at least it's working
now.