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Editorial Team
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Asked: 2026-06-15T06:41:21+00:00

I have had success using the Set a Value in the Windows Registry action

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I have had success using the “Set a Value in the Windows Registry” action for string values. I can’t seem to get it to work for “REG_DWORD” types in the registry. There is no way to specify the type in the install4j UI. I have tried using an installer variable with a byte value for the registry key being set, but that got converted to a string when I check the registry.

I see the “Read” functions available in install4j work for all Windows Registry types. Does install4j support writing a registry value of other than string types? If so, how can it be done?

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1 Answer

  1. Editorial Team

    The “Set a Value in the Windows Registry” action can only set string values.

    You can use the com.install4j.api.windows.WinRegistry API, though. If you pass a value of class java.lang.Integer when calling

    WinRegistry.setValue(...)

    a registry entry of type REG_DWORD is created.

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