Windows 10: Windows 20H2 Runas Savecred Broken

Discus and support Windows 20H2 Runas Savecred Broken in Windows 10 Network and Sharing to solve the problem; Notorious issue i've found on several of our fleet computers that are running Windows 20H2 Particularly Feature Pack 120.2212.2020.0 No surprises, this... Discussion in 'Windows 10 Network and Sharing' started by pensa055, Jun 16, 2021.

  1. pensa055 Win User

    Windows 20H2 Runas Savecred Broken


    Notorious issue i've found on several of our fleet computers that are running Windows 20H2 Particularly Feature Pack 120.2212.2020.0 No surprises, this has broken several things that runas savecred shortcuts just do not initiate anything. Yes i'm aware of security flaws here.Example : C:\Windows\System32\runas.exe /savecred /user:A-COMPUTER\LocalAdmin "C:\Program Files x86\MyProgram\M10POS.exe"When setting up shortcuts to proper program executables, it will prompt for the local admin password to cache it, but it just does not launch any of the programs. It flashed with the 'Select runas' b

    :)
     
    pensa055, Jun 16, 2021
    #1
  2. LemP Win User

    Error while opening software in administrator mode using runas command

    Using runas /savecred creates a significant security problem. Once the password has been entered and saved, the standard user account now has the ability to run any application as Administrator without entering a password (using the runas /savecred command
    to launch any .exe file).

    For an explanation describing how to run a command "as administrator" by using a scheduled task, see the post by "C.M." here:

    https://superuser.com/questions/581548/runas-savecred-ask-for-password-if-another-user-runs-the-same-batch-file


    It's not clear whether that technique will work in your situation, but see the post by "Carlo Costanzo" further down in the same thread for an alternative using VB script.

    However, the following sequence of commands in the Command Prompt may do what you want:

    cd "C:\Program Files\NPortAdminSuite\bin\"

    C:\Windows\System32\runas.exe /user:<ComputerName>\administrator /savecred "C:\Program Files\NPortAdminSuite\bin\npadmer.exe"
     
  3. kevriley Win User
    kevriley, Jun 16, 2021
    #3
  4. Windows 20H2 Runas Savecred Broken

    Windows 10 Task Scheduler not finding Admin

    @Deepika ... did you have any further suggestions on this? I have found a workaround, but I am not happy to use it as I am now calling the exe through a "Runas" with the "/savecred" option. So this solution is not secure, but it does work.
     
    Bryan Mohr, Jun 16, 2021
    #4
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Windows 20H2 Runas Savecred Broken

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