Entpacke den Anhang und öffne die txtfile.reg mit einem Doppelklick. Damit sollte das "Textdokument" wieder im Kontextmenü angezeigt werden.
Inhalt :
Windows Registry Editor Version 5.00
[HKEY_CLASSES_ROOT\.txt]
"Content Type"="text/plain"
"PerceivedType"="text"
@="txtfile"
[HKEY_CLASSES_ROOT\.txt\OpenWithList]
@=""
[HKEY_CLASSES_ROOT\.txt\OpenWithList\dreamweaver.exe]
@=""
[HKEY_CLASSES_ROOT\.txt\PersistentHandler]
@="{5e941d80-bf96-11cd-b579-08002b30bfeb}"
[HKEY_CLASSES_ROOT\.txt\ShellNew]
"ItemName"=hex(2):40,00,25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,\
6f,00,74,00,25,00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,\
00,6e,00,6f,00,74,00,65,00,70,00,61,00,64,00,2e,00,65,00,78,00,65,00,2c,00,\
2d,00,34,00,37,00,30,00,00,00
"NullFile"=""