How to edit a `*.dll.mui` file in Resource Hacker?

Step 1

Take ownership of the file.

Step 2

Provide all permissons for the file to administrators:
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Step 3

Copy the file to a tempary location.
Resource Hacker does not see it in the %SYSTEMROOT%\System32\en-US folder because the file is in use by Windows.

Step 4

Open the file in Resource Hacker.

Step 5

Edit the file.

Step 6

«Action» → «Compile Script»:
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Step 7

Save the file:
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Step 8

Replace the file in the System32 folder