No credentials cache found while validating credentials

Step 1, receipt of client credentials—The client sends a request to connect to the corporate Outlook Web Access server in the Internal network. Steps 2 and 3, sending credentials—Forefront TMG sends the credentials to the authentication provider, such as a domain controller for AD DS authentication or a RADIUS server, and receives acknowledgment from the authentication provider that the user is authenticated.Step 4, authentication delegation—Forefront TMG forwards the client's request to the Outlook Web Access server and authenticates to the Outlook Web Access server by using the client's credentials.The Outlook Web Access server revalidates those credentials, typically using the same authentication provider.Step 5, server response—The Outlook Web Access server sends a response to the client, which is intercepted by Forefront TMG.To do so, click the Edit button at the bottom of the entry screen.

For example, if you click Add a Windows Credential to set up a Remote Desktop Connection, you'll fill in the Add a Windows Credential window (Figure L).Figure CWhen you expand an entry, you can see the contents not only include the username and password, but the website address and the name of the application that saved the address.The Roaming item indicates that this is not a local account.Whenever you respond to a prompt that essentially asks if you want Windows or Internet Explorer to remember your password, the operating system will then store your user credentials in an encrypted file scheme known as the Windows Vault.Having your credentials stored in this vault allows you to be able to automatically log on to a server/site without first being prompted to provide a username and password.

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