By default the {sys}
(system32
) is redirected to {win}\SysWOW64
by the OS for 32-bit applications (like Inno Setup).
If your DLL (or rather the application) is 32-bit, you actually want the redirection. The SysWOW64
is the System32
equivalent for Windows 32-bit emulation on Windows 64-bit. See also Inno Setup install to SysWOW64 in 32Bit mode.
If you do not want the redirection (because your DLL/application is 64-bit), you can override the redirect using the 64bit
flag:
Source: "..."; DestDir: "{sys}"; Flags: 64bit
64bit: Causes the
{sys}
constant to map to the 64-bit System directory when used in theSource
andDestDir
parameters, …. This is the default behavior in a 64-bit mode install.
Or enable 64-bit mode install.
[Setup]
ArchitecturesInstallIn64BitMode=x64 ia64
In 64-bit mode:
- The System32 path returned by the
{sys}
constant maps to the 64-bit System directory by default when used in the [Dirs], [Files], [InstallDelete], [Run], [UninstallDelete], and [UninstallRun] sections. This is because Setup/Uninstall temporarily disables WOW64 file system redirection when files/directories are accessed by those sections. Elsewhere, System32 and{sys}
map to the 32-bit System directory, as is normal in a 32-bit process.