When you are prompted to type your security credentials into the Enter Network Password dialog and you check Save this password in your password list, you have cached your password.
To disable password caching:
1. Open a CMD.EXE window.
2. Type the following command and press Enter:
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /V DisablePasswordCaching /T REG_DWORD /F /D 1
NOTE: REG.EXE is built into Windows XP and Windows Server 2003. It is installed on Windows 2000 from the Support Tools folder on the Windows 2000 CD-ROM.
NOTE: To enable password caching, use:
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /V DisablePasswordCaching /T REG_DWORD /F /D 0
NOTE: You can use PolicyMaker™ Registry Extension freeware to have Group Policy make this registry setting.