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I get an error 1603 when trying to install Hamachi. What can I do?

    Issues related to the Windows operating system cause 1603 errors.


    When installing the host software you see the following error:

    Error 1603: A fatal error occurred during installation


    The solution to a 1603 error depends on its root cause. See Microsoft's support site.

    Article last updated: 27 September, 2022