Start
Spustit
a vložit tam tento příkaz:

REG ADD "HKLM\SOFTWARE\Classes\.txt\ShellNew" /v "NullFile" /t REG_SZ /d "" /f

ENTER
A zrestartovat průzkumník (ukončit proces explorer a spustit proces explorer). Pokud by to nezabralo tak:

Start
Spustit
a vložit tam tyto příkazy postupně:

REG COPY "HKLM\SOFTWARE\Classes\.txt\ShellNew-" "HKLM\SOFTWARE\Classes\.txt\ShellNew" /s /f

REG DELETE "HKLM\SOFTWARE\Classes\.txt\ShellNew" /v "NullFile" /f

REG DELETE "HKLM\SOFTWARE\Classes\.txt\ShellNew" /v "Data" /f

REG DELETE "HKLM\SOFTWARE\Classes\.txt\ShellNew" /v "Command" /f

REG DELETE "HKLM\SOFTWARE\Classes\.txt\ShellNew" /v "FileName" /f

REG ADD "HKLM\SOFTWARE\Classes\.txt\ShellNew" /v "NullFile" /t REG_SZ /d "" /f

A zrestartovat průzkumník.