estou enfrentando um problema que aconteceu duas vezes na semana passada. Ocorreu um erro de WebApplication Unavailable. Ao verificar o EventViewer do servidor no horário do erro, houveram dois erros:
1)
"The server was unable to load the SSL provider library needed to log in; the connection has been closed. SSL is used to encrypt either the login sequence or all communications, depending on how the administrator has configured the server."