HOWTO: Cache profile/domain credentials using Runas.exe

admin | October 1, 2008
Requirement: Target system:
  1. Must be a domain member.
  2. Must be able to reach a domain-controller (via LAN, VPN, dial-up, …).
  3. You must have access to an existing local or [cached] domain account.
HOWTO:
  1. Logon using any local or domain account. If necessary, connect to VPN before or after logging-in.
  2. Verify access to domain (i.e., Can you ping a domain controller?)
  3. Run the following command from a Command Prompt: runas /user:<domain\user> <executable>
    E.g.: runas /user:corp\johanns notepad.exe
  4. Enter user’s password when prompted. 
  5. If connection/authentication succeeds, the system will create and/or cache profile/credentials for the target account, and start the application specified by the runas command. At this point, you may exit the app, and logout of the proxy account.
  6. Logon using the newly cached credentials.
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