IE8 não exibirá imagens .PNG

Question

Eu realmente não sei como o usuário conseguiu fazer isso, mas por algum motivo as imagens .PNG não estão mais funcionando no IE8.

Ao visualizar uma página com imagens .PNG, elas são exibidas apenas como um pequeno X vermelho. Navegar diretamente para a imagem também mostra apenas um pequeno X vermelho.

Eu tentei:

• Reinstalando o IE8.
• Redefinindo as configurações do IE8.
• Fazendo login com um usuário diferente para ver se .PNGs são exibidos corretamente quais são eles.
• Execução de uma verificação de vírus.
• Execução do Malwarebytes.
• Executando o Spybot Search And Destroy.
• Removendo a porcaria geral usando o HijackThis.

Eu poderia apenas reformatar a máquina, mas preferiria corrigir o problema.

O sistema operacional é o Windows XP SP3

    

Answer 1

Seus tipos MIME podem estar configurados incorretamente (provavelmente devido a spywares passados ou a falhas de addons).

Winhelponline tem um artigo útil, incluindo arquivo de registro , você pode fazer o download e mesclar para corrigi-lo. (o arquivo de registro assume que o $ WINDOWS está localizado em C:)

Configurações do Windows XP

Windows Registry Editor Version 5.00

;PNG file association fix for Windows XP
;Created on May 17, 2007 by Ramesh Srinivasan

[HKEY_CLASSES_ROOT\.PNG]
"PerceivedType"="image"
@="pngfile"
"Content Type"="image/png"

[HKEY_CLASSES_ROOT\.PNG\PersistentHandler]
@="{098f2470-bae0-11cd-b579-08002b30bfeb}"

[HKEY_CLASSES_ROOT\pngfile]
@="PNG Image"
"EditFlags"=dword:00010000
"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,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,\
  32,00,5c,00,73,00,68,00,69,00,6d,00,67,00,76,00,77,00,2e,00,64,00,6c,00,6c,\
  00,2c,00,2d,00,33,00,30,00,35,00,00,00
"ImageOptionFlags"=dword:00000003

[HKEY_CLASSES_ROOT\pngfile\CLSID]
@="{25336920-03F9-11cf-8FD0-00AA00686F13}"

[HKEY_CLASSES_ROOT\pngfile\DefaultIcon]
@="shimgvw.dll,2"

[HKEY_CLASSES_ROOT\pngfile\shell]
@="open"

[HKEY_CLASSES_ROOT\pngfile\shell\open]
"MuiVerb"="@shimgvw.dll,-550"

[HKEY_CLASSES_ROOT\pngfile\shell\open\command]
@="rundll32.exe C:\WINDOWS\system32\shimgvw.dll,ImageView_Fullscreen %1"

[HKEY_CLASSES_ROOT\pngfile\shell\open\DropTarget]
"Clsid"="{E84FDA7C-1D6A-45F6-B725-CB260C236066}"

[HKEY_CLASSES_ROOT\pngfile\shell\printto]

[HKEY_CLASSES_ROOT\pngfile\shell\printto\command]
@="rundll32.exe C:\WINDOWS\system32\shimgvw.dll,ImageView_PrintTo /pt \"%1\" \"%2\" \"%3\" \"%4\""

[HKEY_CLASSES_ROOT\SystemFileAssociations\.PNG]
"ImageOptionFlags"=dword:00000003

[-HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.PNG]

[-HKEY_CLASSES_ROOT\Mime\Database\Content Type\image/x-png]

[-HKEY_CLASSES_ROOT\Mime\Database\Content Type\image/png]

[HKEY_CLASSES_ROOT\Mime\Database\Content Type\image/x-png]
"Extension"=".png"
"Image Filter CLSID"="{A3CCEDF7-2DE2-11D0-86F4-00A0C913F750}"

[HKEY_CLASSES_ROOT\Mime\Database\Content Type\image/x-png\Bits]
"0"=hex:08,00,00,00,ff,ff,ff,ff,ff,ff,ff,ff,89,50,4e,47,0d,0a,1a,0a

[HKEY_CLASSES_ROOT\Mime\Database\Content Type\image/png]
"Extension"=".png"
"Image Filter CLSID"="{A3CCEDF7-2DE2-11D0-86F4-00A0C913F750}"

[HKEY_CLASSES_ROOT\Mime\Database\Content Type\image/png\Bits]
"0"=hex:08,00,00,00,ff,ff,ff,ff,ff,ff,ff,ff,89,50,4e,47,0d,0a,1a,0a

[HKEY_CLASSES_ROOT\CLSID\{A3CCEDF7-2DE2-11D0-86F4-00A0C913F750}]
@="CoPNGFilter Class"

[HKEY_CLASSES_ROOT\CLSID\{A3CCEDF7-2DE2-11D0-86F4-00A0C913F750}\InProcServer32]
@="C:\WINDOWS\system32\pngfilt.dll"
"ThreadingModel"="Both"

[HKEY_CLASSES_ROOT\CLSID\{A3CCEDF7-2DE2-11D0-86F4-00A0C913F750}\ProgID]
@="PNGFilter.CoPNGFilter.1"

[HKEY_CLASSES_ROOT\PNGFilter.CoPNGFilter]
@="CoPNGFilter Class"

[HKEY_CLASSES_ROOT\PNGFilter.CoPNGFilter\CLSID]
@="{A3CCEDF7-2DE2-11D0-86F4-00A0C913F750}"

[HKEY_CLASSES_ROOT\PNGFilter.CoPNGFilter.1]
@="CoPNGFilter Class"

[HKEY_CLASSES_ROOT\PNGFilter.CoPNGFilter.1\CLSID]
@="{A3CCEDF7-2DE2-11D0-86F4-00A0C913F750}"

Configurações VISTA

Windows Registry Editor Version 5.00

;PNG file association fix for Windows Vista
;Created on May 17, 2007 by Ramesh Srinivasan

[HKEY_CLASSES_ROOT\.png]
@="pngfile"
"Content Type"="image/png"
"PerceivedType"="image"

[HKEY_CLASSES_ROOT\.png\PersistentHandler]
@="{098f2470-bae0-11cd-b579-08002b30bfeb}"

[HKEY_CLASSES_ROOT\pngfile]
@="PNG Image"
"EditFlags"=dword:00010000
"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,00,73,00,68,00,65,00,6c,00,6c,00,33,00,32,00,2e,00,64,00,6c,00,6c,\
  00,2c,00,2d,00,33,00,30,00,35,00,39,00,38,00,00,00
"ImageOptionFlags"=dword:00000003

[HKEY_CLASSES_ROOT\pngfile\CLSID]
@="{25336920-03F9-11cf-8FD0-00AA00686F13}"

[HKEY_CLASSES_ROOT\pngfile\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,00,38,\
  00,33,00,00,00

[HKEY_CLASSES_ROOT\pngfile\shell]

[HKEY_CLASSES_ROOT\pngfile\shell\open]
"MuiVerb"=hex(2):40,00,25,00,50,00,72,00,6f,00,67,00,72,00,61,00,6d,00,46,00,\
  69,00,6c,00,65,00,73,00,25,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,\
  00,20,00,50,00,68,00,6f,00,74,00,6f,00,20,00,47,00,61,00,6c,00,6c,00,65,00,\
  72,00,79,00,5c,00,70,00,68,00,6f,00,74,00,6f,00,76,00,69,00,65,00,77,00,65,\
  00,72,00,2e,00,64,00,6c,00,6c,00,2c,00,2d,00,33,00,30,00,34,00,33,00,00,00

[HKEY_CLASSES_ROOT\pngfile\shell\open\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,00,72,00,75,00,\
  6e,00,64,00,6c,00,6c,00,33,00,32,00,2e,00,65,00,78,00,65,00,20,00,22,00,25,\
  00,50,00,72,00,6f,00,67,00,72,00,61,00,6d,00,46,00,69,00,6c,00,65,00,73,00,\
  25,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,00,20,00,50,00,68,00,6f,\
  00,74,00,6f,00,20,00,47,00,61,00,6c,00,6c,00,65,00,72,00,79,00,5c,00,50,00,\
  68,00,6f,00,74,00,6f,00,56,00,69,00,65,00,77,00,65,00,72,00,2e,00,64,00,6c,\
  00,6c,00,22,00,2c,00,20,00,49,00,6d,00,61,00,67,00,65,00,56,00,69,00,65,00,\
  77,00,5f,00,46,00,75,00,6c,00,6c,00,73,00,63,00,72,00,65,00,65,00,6e,00,20,\
  00,25,00,31,00,00,00

[HKEY_CLASSES_ROOT\pngfile\shell\open\DropTarget]
"Clsid"="{FFE2A43C-56B9-4bf5-9A79-CC6D4285608A}"

[HKEY_CLASSES_ROOT\pngfile\shell\printto]

[HKEY_CLASSES_ROOT\pngfile\shell\printto\command]
@=hex(2):22,00,25,00,53,00,79,00,73,00,74,00,65,00,6d,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,00,72,00,\
  75,00,6e,00,64,00,6c,00,6c,00,33,00,32,00,2e,00,65,00,78,00,65,00,22,00,20,\
  00,22,00,25,00,53,00,79,00,73,00,74,00,65,00,6d,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,00,73,00,68,\
  00,69,00,6d,00,67,00,76,00,77,00,2e,00,64,00,6c,00,6c,00,22,00,2c,00,49,00,\
  6d,00,61,00,67,00,65,00,56,00,69,00,65,00,77,00,5f,00,50,00,72,00,69,00,6e,\
  00,74,00,54,00,6f,00,20,00,2f,00,70,00,74,00,20,00,22,00,25,00,31,00,22,00,\
  20,00,22,00,25,00,32,00,22,00,20,00,22,00,25,00,33,00,22,00,20,00,22,00,25,\
  00,34,00,22,00,00,00

[HKEY_CLASSES_ROOT\pngfile\shellex]

[-HKEY_LOCAL_MACHINE\SOFTWARE\Classes\MIME\Database\Content Type\image/x-png]

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\MIME\Database\Content Type\image/x-png]
"Extension"=".png"
"Image Filter CLSID"="{A3CCEDF7-2DE2-11D0-86F4-00A0C913F750}"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\MIME\Database\Content Type\image/x-png\Bits]
"0"=hex:08,00,00,00,ff,ff,ff,ff,ff,ff,ff,ff,89,50,4e,47,0d,0a,1a,0a

[-HKEY_LOCAL_MACHINE\SOFTWARE\Classes\MIME\Database\Content Type\image/png]

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\MIME\Database\Content Type\image/png]
"Extension"=".png"
"Image Filter CLSID"="{A3CCEDF7-2DE2-11D0-86F4-00A0C913F750}"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\MIME\Database\Content Type\image/png\Bits]
"0"=hex:08,00,00,00,ff,ff,ff,ff,ff,ff,ff,ff,89,50,4e,47,0d,0a,1a,0a

[HKEY_CLASSES_ROOT\CLSID\{A3CCEDF7-2DE2-11D0-86F4-00A0C913F750}]
@="CoPNGFilter Class"

[HKEY_CLASSES_ROOT\CLSID\{A3CCEDF7-2DE2-11D0-86F4-00A0C913F750}\InprocServer32]
@="C:\Windows\system32\pngfilt.dll"
"ThreadingModel"="Both"

[HKEY_CLASSES_ROOT\CLSID\{A3CCEDF7-2DE2-11D0-86F4-00A0C913F750}\ProgID]
@="PNGFilter.CoPNGFilter.1"

[HKEY_CLASSES_ROOT\PNGFilter.CoPNGFilter.1]
@="CoPNGFilter Class"

[HKEY_CLASSES_ROOT\PNGFilter.CoPNGFilter.1\CLSID]
@="{A3CCEDF7-2DE2-11D0-86F4-00A0C913F750}"

[HKEY_CLASSES_ROOT\PNGFilter.CoPNGFilter]
@="CoPNGFilter Class"

[HKEY_CLASSES_ROOT\PNGFilter.CoPNGFilter\CLSID]
@="{A3CCEDF7-2DE2-11D0-86F4-00A0C913F750}"

    

Answer 2

Depois de alguns dias trabalhando, encontrei o problema aqui no Registro específico do usuário:

[HKEY_CURRENT_USER\Software\Classes\CLSID\{A3CCEDF7-2DE2-11D0-86F4-00A0C913F750}]

[HKEY_CURRENT_USER\Software\Classes\CLSID\{A3CCEDF7-2DE2-11D0-86F4-00A0C913F750}\InProcServer32] @="C:\DOKUME~1\Viktor\LOKALE~1\Temp\37.tmp" "ThreadingModel"="Both"

Quando eu deletei esta entrada completa .png fotos foram exibidas no IE8 e também em outros aplicativos como Eudora ou StarMoney

Esta entrada foi feita pelo vírus TR / SPY.LURK.21

É relatado aqui

Eu encontrei o problema, porque eu tinha outro usuário no meu sistema com a exibição correta de .png. Então eu exportei o registro desse usuário (muito pequeno) e o usuário infectado. Antes dos testes a seguir eu escrevi um ponto de reinicialização no sistema, naturalmente (e eu precisava!). Em seguida, apaguei o registro do usuário infectado e importei o registro correto. Como funcionava, eu apaguei apenas partes e importei até encontrar o problema.