In tip 8407, I explained how the EditFlags Value Name controls a users ability to modify a files association.

To convert all REG_BINARY EditFlags data types to REG_DWORD, run EditFlags2DWORD.bat, which contains:

@echo off
setlocal
if exist %temp%\AllEF.reg del /q /f %temp%\AllEF.reg
regedit /a %temp%\AllEF.reg "HKEY_CLASSES_ROOT"
for /f "Tokens=*" %%x in ('type %temp%\AllEF.reg^|find "\."') do (
 set w1=%%x
 call :isext
)
del /q /f %temp%\AllEF.reg
endlocal
goto :EOF
:isext
set w1=%w1:~19%
set w2=%w1:\=%
if "%w1%" NEQ "%w2%" goto :EOF
set w1=%w1:]=%
call :convert %w1%
goto :EOF
:convert
if {%1}
{} goto finish
set type=%1
if not "%type:~0,1%" EQU "." goto finish
if "%type:~2,1%" EQU "=" goto finish
if "%type:~3,1%" EQU "=" goto finish
if "%type:~4,1%" EQU "=" goto finish
if "%type:~5,1%" EQU "=" goto finish
if "%type:~6,1%" EQU "=" goto finish
for /f "Tokens=*" %%a in ('assoc %type%') do set ftype=%%a
if /i "%ftype:~0,4%" EQU "%type%" goto OK
:finish
goto :EOF
:OK
call set work=%%ftype:%type%=%%
set ftype=%work:~1,99%
if "%ftype%"
"" goto finish
regedit /a %temp%\oldEF.reg "HKEY_CLASSES_ROOT\%ftype%"
if not exist %temp%\oldEF.reg goto :EOF
@echo REGEDIT4>%temp%\NewEF.reg
@echo.>>%temp%\NewEF.reg
@echo [HKEY_CLASSES_ROOT\%ftype%]>>%temp%\NewEF.reg
set sw=Y
set ef=N
set ef1=0
set ef2=1
set ef3=0
set ef4=0
set ef5=0
set ef6=0
set ef7=0
set ef8=0
for /f "Skip=3 Tokens=1* Delims==" %%a in ('type %temp%\oldEF.reg') do set vn=%%a&set string=%%b&call :parse
if "%ef%" EQU "N" goto :EOF
@echo "EditFlags"=->>%temp%\NewEF.reg
@echo "EditFlags"=dword:%ef1%%ef2%%ef3%%ef4%%ef5%%ef6%%ef7%%ef8%>>%temp%\NewEF.reg
regedit /s %temp%\NewEF.reg
del /q %temp%\NewEF.reg
del /q %temp%\oldEF.reg
goto :EOF
:parse
if "%sw%" EQU "N" goto :EOF
set vn=%vn:"=%
if "%vn:~0,1%" EQU "[" set sw=N&goto :EOF
if /i not "%vn%" EQU "EditFlags" goto :EOF
set ef=Y
if /i "%string:~0,6%" EQU "dword:" goto efdw
if /i "%string:~0,4%" EQU "hex:" goto efhx
goto :EOF
:efdw
set ef=N
goto :EOF
:efhx
set ef7=%string:~4,1%
set ef8=%string:~5,1%
set ef5=%string:~7,1%
set ef6=%string:~8,1%
set ef3=%string:~10,1%
set ef4=%string:~11,1%
set ef1=%string:~13,1%
set ef2=%string:~14,1%