MS08-033: Vulnerabilidades no DirectX podem permitir a execução remota de código

Traduções de Artigos Traduções de Artigos
Artigo: 951698 - Ver produtos para os quais este artigo se aplica.
Expandir tudo | Reduzir tudo

Nesta página

INTRODUÇÃO

A Microsoft publicou o boletim de segurança MS08-033. Este boletim de segurança contém todas as informações relevantes sobre a actualização de segurança. Estas informações incluem opções de implementação. Para ver o boletim de segurança completo, visite um dos seguintes Web sites da Microsoft:

Como obter ajuda e suporte para esta actualização de segurança

Os utilizadores domésticos dispõem de suporte gratuito através do número 1-866-PCSAFETY nos Estados Unidos e no Canadá ou contactando a subsidiária local da Microsoft. Para mais informações sobre como contactar a subsidiária local da Microsoft relativamente a problemas de suporte de actualizações de segurança, visite o seguinte Web site de Suporte Internacional da Microsoft:
http://support.microsoft.com/common/international.aspx?rdpath=4
Os clientes da América do Norte também podem obter acesso imediato e ilimitado ao suporte gratuito por correio electrónico ou ao suporte individual ilimitado por chat, visitando o seguinte Web site da Microsoft:
http://support.microsoft.com/oas/default.aspx?&prid=7552
No caso de clientes empresariais, o suporte para actualizações de segurança está disponível através dos contactos de suporte normais.

Problemas conhecidos relativamente a esta actualização de segurança

  • Depois de instalar esta actualização de segurança, poderá constatar que a pré-visualização de uma câmara Web (Webcam) pára inesperadamente. A pré-visualização pára quando o sistema encontra um fotograma MJPEG danificado. O fotograma MJPEG danificado pode ser causado por ruído eléctrico aleatório ou por qualquer outro evento no hardware.

    Para contornar este problema, pare e volte a reiniciar a pré-visualização. Se o problema persistir, experimente ligar a câmara directamente a uma porta USB do computador. Por exemplo, não ligue a câmara a um concentrador USB externo. Além disso, certifique-se de que todos os cabos ligados ao computador se encontram em boas condições de funcionamento. Por exemplo, cabos danificados ou de má qualidade podem ficar susceptíveis a ruído eléctrico.
  • Depois de instalar esta actualização num computador com o Microsoft Windows 2000, poderá ocorrer um ou ambos os problemas a seguir indicados:
    • Efectua uma verificação do sistema utilizando o Microsoft Baseline Security Analyzer (MBSA) 2.1 ou utilizando um servidor do Microsoft Windows Server Update Services (WSUS). Ao fazê-lo, o relatório da verificação poderá indicar que esta actualização foi instalada com êxito, embora a actualização não tenha sido instalada.
    • Os relatórios do MBSA e do WSUS poderão diferir acerca do estado desta actualização de segurança.
    Estes problemas ocorrem devido a um problema de detecção relacionado com esta actualização de segurança.

    O catálogo Microsoft utilizado pelo WSUS e pelo MBSA foi actualizado para resolver este problema de detecção. Por este motivo, uma verificação actual identifica correctamente o estado desta actualização. Se uma verificação indicar que é necessário instalar a actualização de segurança 951698, recomenda-se que instale a actualização.

Informações sobre os ficheiros

A versão em inglês (Estados Unidos) desta actualização de segurança tem os atributos de ficheiro listados na tabela que se segue (ou posteriores). As datas e horas destes ficheiros são indicadas no formato de Hora Universal Coordenada (UTC). Ao visualizar as informações dos ficheiros, estas serão convertidas na hora local. Para determinar a diferença entre a hora UTC e a hora local, utilize o separador Fuso Horário (Time Zone) do item Data e Hora (Date and Time) do Painel de Controlo (Control Panel).

For all supported editions of Windows 2000 SP4

Reduzir esta tabelaExpandir esta tabela
File nameFile versionFile sizeDateTimePlatform
Quartz.dll6.1.9.734791,82430-Apr-200816:33x86

Para todas as edições do Windows 2000 SP4 com DirectX8.1 suportadas

Reduzir esta tabelaExpandir esta tabela
File nameFile versionFile sizeDateTimePlatform
Quartz.dll6.3.1.8911,665,53602-May-200803:09x86

Para todas as edições do Windows 2000 SP4 com DirectX9.0 suportadas

Reduzir esta tabelaExpandir esta tabela
File nameFile versionFile sizeDateTimePlatform
Quartz.dll6.5.1.9091,222,65601-May-200805:16x86

Para todas as edições baseadas em Itanium do Windows Server 2008 suportadas

Reduzir esta tabelaExpandir esta tabela
File nameFile versionFile sizeDateTimePlatform
Ia64_1198f9fd975184b8c1927d9e5201c33b_31bf3856ad364e35_6.0.6001.18063_none_4b970c12f21ee417.manifestNot applicable1,05228-Apr-200819:48Not applicable
Ia64_7218096e539391fefaf91ee111626ce3_31bf3856ad364e35_6.0.6001.22167_none_5833dab4d9dddba6.manifestNot applicable1,05228-Apr-200819:48Not applicable
Ia64_microsoft-windows-directshow-core_31bf3856ad364e35_6.0.6001.18063_none_a633fd2cee122833.manifestNot applicable118,18026-Apr-200818:45Not applicable
Ia64_microsoft-windows-directshow-core_31bf3856ad364e35_6.0.6001.22167_none_a6c19b20072c2d59.manifestNot applicable118,18026-Apr-200809:09Not applicable
Package_1_for_kb951698_bf~31bf3856ad364e35~ia64~~6.0.1.0.mumNot applicable1,97528-Apr-200819:48Not applicable
Package_1_for_kb951698~31bf3856ad364e35~ia64~~6.0.1.0.mumNot applicable2,91328-Apr-200819:48Not applicable
Package_for_kb951698_server_0_bf~31bf3856ad364e35~ia64~~6.0.1.0.mumNot applicable1,41928-Apr-200819:48Not applicable
Package_for_kb951698_server_0~31bf3856ad364e35~ia64~~6.0.1.0.mumNot applicable1,43828-Apr-200819:48Not applicable
Package_for_kb951698_server_bf~31bf3856ad364e35~ia64~~6.0.1.0.mumNot applicable1,42428-Apr-200819:48Not applicable
Package_for_kb951698_server~31bf3856ad364e35~ia64~~6.0.1.0.mumNot applicable1,44328-Apr-200819:48Not applicable
Update-bf.mumNot applicable1,41528-Apr-200819:48Not applicable
X86_microsoft-windows-directshow-core_31bf3856ad364e35_6.0.6001.18063_none_a6325936ee141f37.manifestNot applicable122,93126-Apr-200809:13Not applicable
X86_microsoft-windows-directshow-core_31bf3856ad364e35_6.0.6001.22167_none_a6bff72a072e245d.manifestNot applicable122,93126-Apr-200808:58Not applicable
Quartz.dll6.6.6001.180633,864,57626-Apr-200808:46IA-64
Quartz.dll6.6.6001.221673,864,57626-Apr-200808:07IA-64
Quartz.dll6.6.6001.180631,314,81626-Apr-200808:08x86
Quartz.dll6.6.6001.221671,314,81626-Apr-200807:57x86

Para todas as versões baseadas em x64 do Windows Vista ou do Windows Server 2008 suportadas

Reduzir esta tabelaExpandir esta tabela
File nameFile versionFile sizeDateTimePlatform
Amd64_08622faa781a67fa6f7e09f45038318a_31bf3856ad364e35_6.0.6000.20823_none_1e2c5f8402f7f4ab.manifestNot applicable1,05428-Apr-200819:48Not applicable
Amd64_45839ae41ba2e635f6fb9b35bee5a9ca_31bf3856ad364e35_6.0.6000.16681_none_808e0dadacb929f5.manifestNot applicable1,05428-Apr-200819:48Not applicable
Amd64_83064f214165954fc36185fcefb4f507_31bf3856ad364e35_6.0.6001.22167_none_9a6312b5d06d3ebe.manifestNot applicable1,05428-Apr-200819:48Not applicable
Amd64_ea83cb643bd325551570b486824fe7aa_31bf3856ad364e35_6.0.6001.18063_none_0f2b22ddccbd7bf0.manifestNot applicable1,05428-Apr-200819:48Not applicable
Amd64_microsoft-windows-directshow-core_31bf3856ad364e35_6.0.6000.16681_none_005315a8a95d04b0.manifestNot applicable120,11726-Apr-200808:40Not applicable
Amd64_microsoft-windows-directshow-core_31bf3856ad364e35_6.0.6000.20823_none_011f9475c2482ca9.manifestNot applicable120,11726-Apr-200808:14Not applicable
Amd64_microsoft-windows-directshow-core_31bf3856ad364e35_6.0.6001.18063_none_0250f4baa671906d.manifestNot applicable120,11726-Apr-200818:32Not applicable
Amd64_microsoft-windows-directshow-core_31bf3856ad364e35_6.0.6001.22167_none_02de92adbf8b9593.manifestNot applicable120,11726-Apr-200818:58Not applicable
Package_1_for_kb951698_bf~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable2,14028-Apr-200819:48Not applicable
Package_1_for_kb951698~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable3,08428-Apr-200819:48Not applicable
Package_2_for_kb951698_bf~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,98028-Apr-200819:48Not applicable
Package_2_for_kb951698~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable2,92028-Apr-200819:48Not applicable
Package_3_for_kb951698_bf~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,98028-Apr-200819:48Not applicable
Package_3_for_kb951698~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable2,92028-Apr-200819:48Not applicable
Package_for_kb951698_client_0_bf~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,42328-Apr-200819:48Not applicable
Package_for_kb951698_client_0~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,44228-Apr-200819:48Not applicable
Package_for_kb951698_client_1_bf~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,36528-Apr-200819:48Not applicable
Package_for_kb951698_client_1~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,38428-Apr-200819:48Not applicable
Package_for_kb951698_client_bf~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,69928-Apr-200819:48Not applicable
Package_for_kb951698_client~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,73228-Apr-200819:48Not applicable
Package_for_kb951698_server_0_bf~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,42328-Apr-200819:48Not applicable
Package_for_kb951698_server_0~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,44228-Apr-200819:48Not applicable
Package_for_kb951698_server_bf~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,42828-Apr-200819:48Not applicable
Package_for_kb951698_server~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,44828-Apr-200819:48Not applicable
Update-bf.mumNot applicable2,06828-Apr-200819:48Not applicable
X86_microsoft-windows-directshow-core_31bf3856ad364e35_6.0.6000.16681_none_a4347a24f0ff937a.manifestNot applicable122,93126-Apr-200808:44Not applicable
X86_microsoft-windows-directshow-core_31bf3856ad364e35_6.0.6000.20823_none_a500f8f209eabb73.manifestNot applicable122,93126-Apr-200808:01Not applicable
X86_microsoft-windows-directshow-core_31bf3856ad364e35_6.0.6001.18063_none_a6325936ee141f37.manifestNot applicable122,93126-Apr-200809:13Not applicable
X86_microsoft-windows-directshow-core_31bf3856ad364e35_6.0.6001.22167_none_a6bff72a072e245d.manifestNot applicable122,93126-Apr-200808:58Not applicable
Quartz.dll6.6.6000.166811,586,68826-Apr-200808:07x64
Quartz.dll6.6.6000.208231,586,68826-Apr-200807:49x64
Quartz.dll6.6.6001.180631,571,32826-Apr-200808:30x64
Quartz.dll6.6.6001.221671,571,32826-Apr-200808:17x64
Quartz.dll6.6.6000.166811,327,10426-Apr-200808:02x86
Quartz.dll6.6.6000.208231,327,61626-Apr-200807:41x86
Quartz.dll6.6.6001.180631,314,81626-Apr-200808:08x86
Quartz.dll6.6.6001.221671,314,81626-Apr-200807:57x86

Para todas as edições de 32 bits do Windows Vista ou do Windows Server 2008 suportadas

Reduzir esta tabelaExpandir esta tabela
File nameFile versionFile sizeDateTimePlatform
Package_1_for_kb951698_bf~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,91328-Apr-200819:48Not applicable
Package_1_for_kb951698~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable2,62628-Apr-200819:48Not applicable
Package_2_for_kb951698_bf~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,75528-Apr-200819:48Not applicable
Package_2_for_kb951698~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable2,46428-Apr-200819:48Not applicable
Package_3_for_kb951698_bf~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,75528-Apr-200819:48Not applicable
Package_3_for_kb951698~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable2,46428-Apr-200819:48Not applicable
Package_for_kb951698_client_0_bf~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,41528-Apr-200819:48Not applicable
Package_for_kb951698_client_0~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,43428-Apr-200819:48Not applicable
Package_for_kb951698_client_1_bf~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,35728-Apr-200819:48Not applicable
Package_for_kb951698_client_1~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,37628-Apr-200819:48Not applicable
Package_for_kb951698_client_bf~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,68928-Apr-200819:48Not applicable
Package_for_kb951698_client~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,72228-Apr-200819:48Not applicable
Package_for_kb951698_server_0_bf~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,41528-Apr-200819:48Not applicable
Package_for_kb951698_server_0~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,43428-Apr-200819:48Not applicable
Package_for_kb951698_server_bf~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,42028-Apr-200819:48Not applicable
Package_for_kb951698_server~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,44028-Apr-200819:48Not applicable
Update-bf.mumNot applicable2,05428-Apr-200819:48Not applicable
X86_5904a9d069af804cb0b0b58d96a05161_31bf3856ad364e35_6.0.6001.18063_none_4e7ce018f1fe727f.manifestNot applicable70328-Apr-200819:48Not applicable
X86_60dd462781a882526a8a8a7969c0faae_31bf3856ad364e35_6.0.6000.20823_none_d3eccee154117654.manifestNot applicable70328-Apr-200819:48Not applicable
X86_68800842b613530caeed30caae398bd3_31bf3856ad364e35_6.0.6000.16681_none_ed3a066e22369c27.manifestNot applicable70328-Apr-200819:48Not applicable
X86_82a53201ba72daadc1b79ba56e810f59_31bf3856ad364e35_6.0.6001.22167_none_05e277b78bb127f0.manifestNot applicable70328-Apr-200819:48Not applicable
X86_microsoft-windows-directshow-core_31bf3856ad364e35_6.0.6000.16681_none_a4347a24f0ff937a.manifestNot applicable122,93126-Apr-200808:44Not applicable
X86_microsoft-windows-directshow-core_31bf3856ad364e35_6.0.6000.20823_none_a500f8f209eabb73.manifestNot applicable122,93126-Apr-200808:01Not applicable
X86_microsoft-windows-directshow-core_31bf3856ad364e35_6.0.6001.18063_none_a6325936ee141f37.manifestNot applicable122,93126-Apr-200809:13Not applicable
X86_microsoft-windows-directshow-core_31bf3856ad364e35_6.0.6001.22167_none_a6bff72a072e245d.manifestNot applicable122,93126-Apr-200808:58Not applicable
Quartz.dll6.6.6000.166811,327,10426-Apr-200808:02x86
Quartz.dll6.6.6000.208231,327,61626-Apr-200807:41x86
Quartz.dll6.6.6001.180631,314,81626-Apr-200808:08x86
Quartz.dll6.6.6001.221671,314,81626-Apr-200807:57x86

Para todas as edições baseadas em x64 do Windows Server 2003 ou do Windows XP Professional suportadas

Reduzir esta tabelaExpandir esta tabela
File nameFile versionFile sizeDateTimePlatformSP requirementService branch
Quartz.dll6.5.3790.31302,174,97601-May-200800:04x64SP1SP1GDR
Wquartz.dll6.5.3790.31301,291,26401-May-200800:04x86SP1SP1GDR\WOW
Quartz.dll6.5.3790.31302,174,97601-May-200800:04x64SP1SP1QFE
Wquartz.dll6.5.3790.31301,291,26401-May-200800:05x86SP1SP1QFE\WOW
Quartz.dll6.5.3790.42832,175,48801-May-200800:08x64SP2SP2GDR
Wquartz.dll6.5.3790.42831,274,88001-May-200800:08x86SP2SP2GDR\WOW
Quartz.dll6.5.3790.42832,175,48801-May-200800:05x64SP2SP2QFE
Wquartz.dll6.5.3790.42831,274,88001-May-200800:05x86SP2SP2QFE\WOW

Para todas as edições baseadas em Itanium do Windows Server 2003 suportadas

Reduzir esta tabelaExpandir esta tabela
File nameFile versionFile sizeDateTimePlatformSP requirementService branch
Quartz.dll6.5.3790.31303,982,84801-May-200800:03IA-64SP1SP1GDR
Wquartz.dll6.5.3790.31301,291,26401-May-200800:03x86SP1SP1GDR\WOW
Quartz.dll6.5.3790.31303,982,84801-May-200800:03IA-64SP1SP1QFE
Wquartz.dll6.5.3790.31301,291,26401-May-200800:03x86SP1SP1QFE\WOW
Quartz.dll6.5.3790.42833,982,84801-May-200800:07IA-64SP2SP2GDR
Wquartz.dll6.5.3790.42831,274,88001-May-200800:07x86SP2SP2GDR\WOW
Quartz.dll6.5.3790.42833,983,36001-May-200800:04IA-64SP2SP2QFE
Wquartz.dll6.5.3790.42831,274,88001-May-200800:04x86SP2SP2QFE\WOW

Para todas as edições de 32 bits do Windows Server 2003 suportadas

Reduzir esta tabelaExpandir esta tabela
File nameFile versionFile sizeDateTimePlatformSP requirementService branch
Quartz.dll6.5.3790.31301,291,26430-Apr-200813:57x86SP1SP1GDR
Quartz.dll6.5.3790.31301,291,26430-Apr-200814:01x86SP1SP1QFE
Quartz.dll6.5.3790.42831,274,88030-Apr-200813:36x86SP2SP2GDR
Quartz.dll6.5.3790.42831,274,88030-Apr-200814:17x86SP2SP2QFE

Para todas as edições de 32 bits do Windows XP suportadas

Reduzir esta tabelaExpandir esta tabela
File nameFile versionFile sizeDateTimePlatformSP requirementService branch
Quartz.dll6.5.2600.33671,287,68007-May-200805:18x86SP2SP2GDR
Quartz.dll6.5.2600.33671,288,19207-May-200804:55x86SP2SP2QFE
Quartz.dll6.5.2600.55961,288,19207-May-200805:12x86SP3SP3GDR
Quartz.dll6.5.2600.55961,288,19207-May-200805:04x86SP3SP3QFE

Propriedades

Artigo: 951698 - Última revisão: 24 de novembro de 2008 - Revisão: 3.0
A informação contida neste artigo aplica-se a:
  • Microsoft Windows Server 2003, Standard x64 Edition
  • Microsoft Windows Server 2003, Enterprise x64 Edition
  • Microsoft Windows Server 2003, Datacenter x64 Edition
  • Microsoft Windows Server 2003 Service Pack 1 nas seguintes plataformas
    • Microsoft Windows Server 2003 Standard Edition
    • Microsoft Windows Server 2003 Enterprise Edition
    • Microsoft Windows Server 2003 Web Edition
    • Microsoft Windows Server 2003 Datacenter Edition
    • Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems
    • Microsoft Windows Server 2003, Datacenter Edition for Itanium-Based Systems
  • Microsoft Windows Server 2003 Service Pack 2 nas seguintes plataformas
    • Microsoft Windows Server 2003 Standard Edition
    • Microsoft Windows Server 2003 Enterprise Edition
    • Microsoft Windows Server 2003 Web Edition
    • Microsoft Windows Server 2003 Datacenter Edition
    • Microsoft Windows Server 2003, Standard x64 Edition
    • Microsoft Windows Server 2003, Enterprise x64 Edition
    • Microsoft Windows Server 2003, Datacenter x64 Edition
    • Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems
    • Microsoft Windows Server 2003, Datacenter Edition for Itanium-Based Systems
  • Microsoft Windows Server 2003 Standard Edition
  • Microsoft Windows Server 2003 Enterprise Edition
  • Microsoft Windows Server 2003 Web Edition
  • Microsoft Windows Server 2003 Datacenter Edition
  • Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems
  • Microsoft Windows Server 2003, Datacenter Edition for Itanium-Based Systems
  • Microsoft Windows 2000 Server SP4 nas seguintes plataformas
    • Microsoft Windows 2000 Datacenter Server
    • Microsoft Windows 2000 Advanced Server
    • Microsoft Windows 2000 Server
    • Microsoft Windows 2000 Professional Edition
  • Microsoft Small Business Server 2000 Standard Edition
  • Microsoft Windows XP Tablet PC Edition 2005
  • Microsoft Windows XP Media Center Edition 2005
  • Microsoft Windows XP Professional x64 Edition
  • Microsoft Windows XP Service Pack 3 nas seguintes plataformas
    • Microsoft Windows XP Home Edition
    • Microsoft Windows XP Professional Edition
  • Microsoft Windows XP Service Pack 2 nas seguintes plataformas
    • Microsoft Windows XP Home Edition
    • Microsoft Windows XP Professional Edition
  • Windows Vista Ultimate
  • Windows Vista Enterprise
  • Windows Vista Business
  • Windows Vista Home Premium
  • Windows Vista Home Basic
  • Windows Vista Starter
  • Windows Vista Ultimate 64-bit edition
  • Windows Vista Enterprise 64-bit edition
  • Windows Vista Home Premium 64-bit edition
  • Windows Vista Home Basic 64-bit edition
  • Windows Vista Service Pack 1 nas seguintes plataformas
    • Windows Vista Enterprise 64-bit edition
    • Windows Vista Home Basic 64-bit edition
    • Windows Vista Home Premium 64-bit edition
    • Windows Vista Ultimate 64-bit edition
    • Windows Vista Business
    • Windows Vista Home Basic
    • Windows Vista Home Premium
    • Windows Vista Starter
    • Windows Vista Ultimate
  • Windows Server 2008 for Itanium-Based Systems
  • Windows Server 2008 Datacenter
  • Windows Server 2008 Enterprise
  • Windows Server 2008 Standard
  • Windows Web Server 2008
Palavras-chave: 
kbexpertiseinter kbpubtypekc kbfix kbbug kbsecvulnerability kbsecbulletin kbsecurity kbqfe kbexpertisebeginner KB951698

Submeter comentários

 

Contact us for more help

Contact us for more help
Connect with Answer Desk for expert help.
Get more support from smallbusiness.support.microsoft.com