The Windows Run dialog box is a resource located in c:\windows\system32\shell32.dll. The dialog can be opened by running the following command: c:\windows\system32\rundll32.exe shell32.dll,#61. This works on both 32 bit and 64 bit Windows. The dialog can also be launched with the command: explorer shell::: {2559a1f3-21d7-11d4-bdaf-00c04f60b9f0} More @Wikipedia
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