Você precisa executar o seguinte arquivo .reg como administrador e excluir manualmente a seguinte chave manualmente:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.BAT\UserChoice
Execute o arquivo reg como admin:
runas /user:administrator "regedit /s c:\fix.reg"
Arquivo Reg:
Windows Registry Editor Version 5.00
[HKEY_CLASSES_ROOT\batfile]
@="Windows Batch File"
"EditFlags"=hex:30,04,00,00
"FriendlyTypeName"=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,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,\
32,00,5c,00,61,00,63,00,70,00,70,00,61,00,67,00,65,00,2e,00,64,00,6c,00,6c,\
00,2c,00,2d,00,36,00,30,00,30,00,32,00,00,00
[HKEY_CLASSES_ROOT\batfile\DefaultIcon]
@=hex(2):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,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,69,00,6d,00,\
61,00,67,00,65,00,72,00,65,00,73,00,2e,00,64,00,6c,00,6c,00,2c,00,2d,00,36,\
00,38,00,00,00
[HKEY_CLASSES_ROOT\batfile\shell]
[HKEY_CLASSES_ROOT\batfile\shell\edit]
[HKEY_CLASSES_ROOT\batfile\shell\edit\command]
@=hex(2):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,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,4e,00,4f,00,\
54,00,45,00,50,00,41,00,44,00,2e,00,45,00,58,00,45,00,20,00,25,00,31,00,00,\
00
[HKEY_CLASSES_ROOT\batfile\shell\open]
"EditFlags"=hex:00,00,00,00
[HKEY_CLASSES_ROOT\batfile\shell\open\command]
@="\"%1\" %*"
[HKEY_CLASSES_ROOT\batfile\shell\print]
[HKEY_CLASSES_ROOT\batfile\shell\print\command]
@=hex(2):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,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,4e,00,4f,00,\
54,00,45,00,50,00,41,00,44,00,2e,00,45,00,58,00,45,00,20,00,2f,00,70,00,20,\
00,25,00,31,00,00,00
[HKEY_CLASSES_ROOT\batfile\shell\runas]
"HasLUAShield"=""
[HKEY_CLASSES_ROOT\batfile\shell\runas\command]
@=hex(2):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,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,63,00,6d,00,\
64,00,2e,00,65,00,78,00,65,00,20,00,2f,00,43,00,20,00,22,00,25,00,31,00,22,\
00,20,00,25,00,2a,00,00,00
[HKEY_CLASSES_ROOT\batfile\shell\runasuser]
@="@shell32.dll,-50944"
"Extended"=""
"SuppressionPolicyEx"="{F211AA05-D4DF-4370-A2A0-9F19C09756A7}"
[HKEY_CLASSES_ROOT\batfile\shell\runasuser\command]
"DelegateExecute"="{ea72d00e-4960-42fa-ba92-7792a7944c1d}"
[HKEY_CLASSES_ROOT\batfile\ShellEx]
[HKEY_CLASSES_ROOT\batfile\ShellEx\ContextMenuHandlers]
@="Compatibility"
[HKEY_CLASSES_ROOT\batfile\ShellEx\ContextMenuHandlers\Compatibility]
@="{1d27f844-3a1f-4410-85ac-14651078412d}"
[HKEY_CLASSES_ROOT\batfile\ShellEx\ContextMenuHandlers\OpenGLShExt]
@="{E97DEC16-A50D-49bb-AE24-CF682282E08D}"
[HKEY_CLASSES_ROOT\batfile\ShellEx\DropHandler]
@="{86C86720-42A0-1069-A2E8-08002B30309D}"
[HKEY_CLASSES_ROOT\batfile\ShellEx\PropertySheetHandlers]
[HKEY_CLASSES_ROOT\batfile\ShellEx\PropertySheetHandlers\ShimLayer Property Page]
@="{513D916F-2A8E-4F51-AEAB-0CBC76FB1AF8}"
[HKEY_CLASSES_ROOT\batfile\ShellEx\{8895b1c6-b41f-4c1c-a562-0d564250836f}]
@="{1531d583-8375-4d3f-b5fb-d23bbd169f22}"