Here are the switches supported by Legacy Update setup:
| /S |
Silent installation. Displays no UI and proceeds with default configuration. If a restart is required, Legacy Update setup will exit with error level 3010. The Legacy Update website will not be opened after installation completes. (Case sensitive - the flag is a capital S, not lowercase.)
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| /passive |
Passive installation. Similar to /S, but still displays the setup user interface, and may display error or question dialogs. Added in Legacy Update 1.10.
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| /norestart |
Don’t restart automatically. Instead, a dialog will prompt you to restart (unless /S has also been passed). Legacy Update will resume immediately after the restart.
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Here are the switches supported by the Legacy Update launcher (LegacyUpdate.exe):
| /launch |
Launch Legacy Update website in Internet Explorer. If no parameters are provided, /launch is assumed.
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| /options |
Open the Windows Update options control panel.
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| /log |
Open a log file in the default program for .log files (by default, Notepad). As of Legacy Update 1.13, this accepts an additional parameter to select the log to open. For more information, see our article on log files.
| /log system |
Open the Legacy Update system-level log file. This contains operations executed as administrator. |
| /log user |
Open the Legacy Update log file for this user. This contains operations executed in a non-administrator Internet Explorer window. |
| /log low |
Open the Legacy Update log file for this user at low integrity level. This usually does not exist. |
| /log windowsupdate |
Open the Windows Update log file. On Windows 10 and later, executes the cmdlet Get-WindowsUpdateLog in PowerShell, and then opens the resulting log file. |
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| /regserver |
Register the ActiveX control with the system. Executed automatically by Legacy Update setup during installation.
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| /unregserver |
Unregister the ActiveX control with the system. Executed automatically by Legacy Update setup during uninstallation.
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