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Using the "Local Group Policy Editor", it is possible to add the execution of a Powershell script at Windows shutdown. As this operation is performed with the "system" account, some operations have to be performed depending on the method chosen (opa0, rsh or ssh).

Warning

Please note shutdown scripts are executed when the shutdown is executed either from the "Windows Start" menu or using the shutdown command line. They are not always executed when clicking on the "Restart" button from the Windows Update tool.

opa0 mode preparation

If the combination of username/password is used, there is no need for configuration change.

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C:\WINDOWS\system32>whoami
nt authority\system

Run the following command to create the encrypted file:

C:\WINDOWSUsers\system32>powershell PS C:\WINDOWS\system32>Spock> powershell -command "ConvertTo-SecureString -String "'<password>" ' -AsPlainText -Force ^
More? | ConvertFrom-SecureString | Out-File "'<full path to the file>'"

Example:

C:\WINDOWSUsers\system32>powershellPS C:\WINDOWS\system32>Spock> powershell -command "ConvertTo-SecureString -String "'12345" ' -AsPlainText -Force ^
More? | ConvertFrom-SecureString | Out-File 'c:\charon\msds20vmspwd.txt'"


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Run the Powershell script in check mode:

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Note

It is recommended to move the psexec.exe program file to a secured folder or to remove it when it is no more needed (check completed)

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rsh mode preparation

Warning

A proxy has to be defined at OpenVMS level hence the local "system" user must be specified. This user name is translated depending on the language of the Windows distribution.

It is then highly recommended to install an English version of Windows to avoid issues with accents and non standard characters when creating this proxy.

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C:\WINDOWS\system32>whoami
nt authority\system

Run the Powershell script in check mode:

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C:\WINDOWS\system32>whoami
nt authority\system

Create a new ssh trust as described in the "Using ssh" chapter.

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