HKCU\Software\Microsoft\Windows NT\CurrentVersion\Windows

Data type Range Default value
REG_SZ File name extensions (Blank value)


Defines files to be considered documents by Windows 2000. Enter the file name extensions without the preceding periods, and separate the extensions from each other with a space.

Use this entry only to define document file name extensions that are not associated with any application and are not listed in the Extensions subkey.

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