Default File Associations

A full overview of all Default File Associations.

This list is for reference after changing default programs, this list was complined right after installing Windows 8.1 Pro. You are free to share this list, but please put a link back to this post.

 

FileDescriptionDefault   App / Application
.3g23G2 FileVideo
.3gp3GP FileVideo
.3gp23GPP2 Audio/VideoWindows Media Player
.3gpp3GPP FileVideo
.aacAAC FileMusic
.adtADTS AudioWindows Media Player
.adtsADTS AudioWindows Media Player
.aifAIFF Format SoundWindows Media Player
.aifcAIFF Format SoundWindows Media Player
.aiffAIFF Format SoundWindows Media Player
.appcontent-msApplication ContentWindows Shell Common Dll
.applicationApplication ManifestClickOnce Application Deployment Support Library
.appref-msApplication ReferenceClickOnce Application Deployment Support Library
.arwARW FilePhotos
.asfWindows Media Audio/Video fileWindows Media Player
.asxWindows Media Audio/Video playlistWindows Media Player
.auAU Format SoundWindows Media Player
.aviAVI FileVideo
.blgPerformance Monitor FileResource and Performance Monitor
.bmpBMP FilePhotos
.campWCS Viewing Condition ProfileMicrosoft Color Control Panel
.catSecurity CatalogCrypto Shell Extensions
.cdaCD Audio TrackWindows Media Player
.cdmpWCS Device ProfileMicrosoft Color Control Panel
.cdxmlWindows PowerShell Cmdlet Definition XML DocumentNotepad
.cerSecurity CertificateCrypto Shell Extensions
.chmCompiled HTML Help fileMicrosoft® HTML Help Executable
.compositefontComposite Font FileNotepad
.contactContact fileWindows Contacts
.cplControl panel itemWindows Control Panel
.cr2CR2 FilePhotos
.crlCertificate Revocation ListCrypto Shell Extensions
.crtSecurity CertificateCrypto Shell Extensions
.crwCRW FilePhotos
.cssCascading Style Sheet DocumentNotepad
.dctxOpen Extended DictionaryMicrosoft IME Open Extended Dictionary Module
.dctxcOpen Extended DictionaryMicrosoft IME Open Extended Dictionary Module
.derSecurity CertificateCrypto Shell Extensions
.deskthemepackWindows Desktop Theme Pack FilePersonalization CPL
.diagcabTroubleshooting Pack CabinetDiagnostics Troubleshooting Wizard
.diagcfgTroubleshooting Pack ConfigurationDiagnostics Troubleshooting Wizard
.diagpkgTroubleshooting PackDiagnostics Troubleshooting Wizard
.dibDIB FilePhotos
.divxDIVX FileVideo
.docxOffice Open XML DocumentWordPad
.dvr-msMicrosoft Recorded TV ShowWindows Media Player
.dwfxXPS DocumentXPS Viewer
.easmxXPS DocumentXPS Viewer
.edrwxXPS DocumentXPS Viewer
.emfEMF FilePaint
.eprtxXPS DocumentXPS Viewer
.erfERF FilePhotos
.evtClassic Event LogEvent Viewer Snapin Launcher
.evtxEvent LogEvent Viewer Snapin Launcher
.fonFont fileWindows Font Viewer
.gifGIF FilePhotos
.gmmpWCS Gamut Mapping ProfileMicrosoft Color Control Panel
.groupGroup fileWindows Contacts
.hlpHelp fileWindows Winhlp32 Stub
.htaHTML ApplicationMicrosoft (R) HTML Application host
.htmHTML DocumentInternet Explorer
.htmlHTML DocumentInternet Explorer
.iccICC ProfileMicrosoft Color Control Panel
.icmICC ProfileMicrosoft Color Control Panel
.icoIconWindows Photo Viewer
.imesxIME Search provider definitionIME search module
.infSetup InformationNotepad
.iniConfiguration settingsNotepad
.jfifJFIF FilePhotos
.jntJournal DocumentWindows Journal
.jpeJPE FilePhotos
.jpegJPEG FilePhotos
.jpgJPG FilePhotos
.jsJavaScript FileMicrosoft ® Windows Based Script Host
.jseJScript Encoded Script FileMicrosoft ® Windows Based Script Host
.jtpJournal TemplateWindows Journal
.jtxXPS DocumentXPS Viewer
.jxrJXR FilePhotos
.kdcKDC FilePhotos
.logText DocumentNotepad
.m1vMovie ClipWindows Media Player
.m2tM2T FileNot selected
.m2tsM2TS FileNot selected
.m2vMovie ClipWindows Media Player
.m3uM3U FileNot selected
.m4aM4A FileMusic
.m4vM4V FileVideo
.mfpMacromedia Flash PaperInternet Explorer
.mhtMHTML DocumentInternet Explorer
.mhtmlMHTML DocumentInternet Explorer
.midMIDI SequenceWindows Media Player
.midiMIDI SequenceWindows Media Player
.migEasy Transfer fileWindows Easy Transfer Application
.mlcLanguage Pack FileLanguage Pack Installer
.modMOD FileNot selected
.movMOV FileVideo
.mp2MP3 Format SoundWindows Media Player
.mp2vMovie ClipWindows Media Player
.mp3MP3 FileMusic
.mp4MP4 FileVideo
.mp4vMP4V FileVideo
.mpaMovie ClipWindows Media Player
.mpeMovie ClipWindows Media Player
.mpegMovie ClipWindows Media Player
.mpgMovie ClipWindows Media Player
.mpv2MPV2 FileNot selected
.mrwMRW FilePhotos
.mscMicrosoft Common Console DocumentMicrosoft Management Console
.msiWindows Installer PackageWindows® installer
.mspWindows Installer PatchWindows® installer
.msrcincidentWindows Remote Assistance InvitationWindows Remote Assistance
.msuMicrosoft Update Standalone PackageWindows Update Standalone Installer
.mtsAVCHD VideoWindows Media Player
.nefNEF FilePhotos
.nfoSystem Information FileSystem Information
.nrwNRW FilePhotos
.odtOpenDocument TextWordPad
.orfORF FilePhotos
.otfOpenType font fileWindows Font Viewer
.oxpsOXPS FileReader
.p12Personal Information ExchangeCrypto Shell Extensions
.p7bPKCS #7 CertificatesCrypto Shell Extensions
.p7cCertificate fileWindows Contacts
.p7rCertificate Request ResponseCrypto Shell Extensions
.p7sPKCS #7 SignatureCrypto Shell Extensions
.panoPANO FilePhotos
.partialPartial DownloadInternet Explorer
.pbkDial-Up PhonebookRemote Access Phonebook
.pdfPDF FileReader
.pefPEF FilePhotos
.perfmoncfgPerformance Monitor ConfigurationResource and Performance Monitor
.pfmType 1 Font fileWindows Font Viewer
.pfxPersonal Information ExchangeCrypto Shell Extensions
.pngPNG FilePhotos
.prfPICS Rules FileInternet Ratings and Local User Management DLL
.printerexportPrinter Migration FilePrintBrm Application
.ps1Windows PowerShell ScriptNotepad
.ps1xmlWindows PowerShell XML DocumentNotepad
.psc1Windows PowerShell Console FileWindows PowerShell
.psd1Windows PowerShell Data FileNotepad
.psm1Windows PowerShell Script ModuleNotepad
.psscWindows PowerShell Session Configuration FileNotepad
.qdsDirectory QueryDirectory Service Find
.rafRAF FilePhotos
.ratRating System FileInternet Ratings and Local User Management DLL
.rawRAW FilePhotos
.rdpRemote Desktop ConnectionRemote Desktop Connection
.regRegistration EntriesRegistry Editor
.resmoncfgResource Monitor ConfigurationResource and Performance Monitor
.rleRLE FilePaint
.rmiMIDI SequenceWindows Media Player
.rtfRich Text DocumentWordPad
.rw2RW2 FilePhotos
.rwlRWL FilePhotos
.scpText DocumentNotepad
.sctWindows Script ComponentNotepad
.settingcontent-msSetting ContentWindows Shell Common Dll
.sndAU Format SoundWindows Media Player
.spcPKCS #7 CertificatesCrypto Shell Extensions
.sr2SR2 FilePhotos
.srwSRW FilePhotos
.sstMicrosoft Serialized Certificate StoreCrypto Shell Extensions
.svgSVG DocumentInternet Explorer
.themeWindows Theme FilePersonalization CPL
.themepackWindows Theme Pack FilePersonalization CPL
.tifTIF FileReader
.tiffTIFF FileReader
.todTOD FileVideo
.tsMPEG-2 TS VideoWindows Media Player
.ttcTrueType collection font fileWindows Font Viewer
.ttfTrueType font fileWindows Font Viewer
.ttsMPEG-2 TS VideoWindows Media Player
.txtText DocumentNotepad
.udlMicrosoft Data LinkOLE DB Core Services
.urlInternet ShortcutInternet Browser
.vbeVBScript Encoded Script FileMicrosoft ® Windows Based Script Host
.vbsVBScript Script FileMicrosoft ® Windows Based Script Host
.vcfVCard fileWindows Contacts
.wabWAB fileWindows Contacts
.wavWAV FileMusic
.waxWindows Media Audio shortcutWindows Media Player
.wcxRemoteApp and Desktop Connections Configuration FileExtensible Wizards Host Process
.wdpWDP FilePhotos
.webpnpWeb Point And Print FileSupport exe for Internet Printing
.websitePinned Site ShortcutInternet Explorer
.wmWM FileVideo
.wmaWMA FileMusic
.wmdWindows Media Player Download PackageWindows Media Player
.wmfWMF FilePaint
.wmsWindows Media Player Skin FileWindows Media Player
.wmvWMV FileVideo
.wmxWindows Media Audio/Video playlistWindows Media Player
.wmzWindows Media Player Skin PackageWindows Media Player
.workfoldersMicrosoft WorkfoldersWindows Control Panel
.wplWindows Media playlistWindows Media Player
.wscWindows Script ComponentNotepad
.wsfWindows Script FileMicrosoft ® Windows Based Script Host
.wshWindows Script Host Settings FileMicrosoft ® Windows Based Script Host
.wtvWindows Recorded TV ShowWindows Media Player
.wtxText DocumentNotepad
.wvxWindows Media Audio/Video playlistWindows Media Player
.xamlWindows Markup FileWindows Presentation Foundation Host
.xbapXAML Browser ApplicationWindows Presentation Foundation Host
.xhtXHTML DocumentInternet Explorer
.xhtmlXHTML DocumentInternet Explorer
.xmlXML DocumentInternet Explorer
.xpsXPS FileReader
.xrm-msXrML Digital LicenseInternet Explorer
.xslXSL StylesheetInternet Explorer
.xvidXVID FileVideo
.zplZPL FileMusic
AUDIOCALL-MESSENGERURL:audiocall-messengerSkype
AUDIOCALL-SKYPE-COMURL:audiocall-skype-comSkype
BINGFINANCEURL:bingfinanceFinance
BINGFOODANDDRINKURL:bingfoodanddrinkFood & Drink
BINGHEALTHNFITNESSURL:binghealthnfitnessHealth & Fitness
BINGMAPSURL:bingmapsMaps
BINGNEWSURL:bingnewsNews
BINGSPORTSURL:bingsportsSports
BINGTRAVELURL:bingtravelTravel
BINGWEATHERURL:bingweatherWeather
DLNA-PLAYSINGLEURL:DLNA-PLAYSINGLE ProtocolWindows Media Player
EXPLORER.BURNSELECTIONFile Explorer ‘Burn to disc’ buttonWindows Explorer
EXPLORER.ERASEDISCFile Explorer ‘Erase this disc’ buttonWindows Explorer
EXPLORER.ZIPSELECTIONFile Explorer ‘Zip’ buttonWindows Explorer
FTPURL:File Transfer ProtocolInternet Explorer
HTTPURL:HyperText Transfer ProtocolInternet Explorer
HTTPSURL:HyperText Transfer Protocol with PrivacyInternet Explorer
LDAPURL:LDAP ProtocolWindows Contacts
MAILTOURL:mailtoMail
MESSAGE-MESSENGERURL:message-messengerSkype
MESSAGE-SKYPE-COMURL:message-skype-comSkype
MICROSOFTMUSICURL:microsoftmusicMusic
MICROSOFTVIDEOURL:microsoftvideoVideo
MKURL:MK ProtocolInternet Explorer
MMSURL:MMS ProtocolWindows Media Player
MS-MAILURL:ms-mailMail
PROFILE-FACEBOOK-COMURL:profile-facebook-comPeople
PROFILE-GOOGLE-COMURL:profile-google-comPeople
PROFILE-LINKEDIN-COMURL:profile-linkedin-comPeople
PROFILE-LYNC-COMURL:profile-lync-comPeople
PROFILE-MESSENGERURL:profile-messengerPeople
PROFILE-OUTLOOK-COMURL:profile-outlook-comPeople
PROFILE-SKYPE-COMURL:profile-skype-comPeople
PROFILE-TWITTER-COMURL:profile-twitter-comPeople
PROFILE-WEIBO-COMURL:profile-weibo-comPeople
PROFILE-YAHOO-COMURL:profile-yahoo-comPeople
RESURL:RES ProtocolInternet Explorer
SEARCHWindows Search protocolWindows Explorer
SKYPEURL:skypeSkype
SMSURL:smsSkype
TELURL:telSkype
VIDEOCALL-MESSENGERURL:videocall-messengerSkype
VIDEOCALL-SKYPE-COMURL:videocall-skype-comSkype
WINDOWS.CONTACT.CALL+OUTLOOK.COMCallSkype
WINDOWS.CONTACT.CALL+SKYPE.COMCallSkype
WINDOWS.CONTACT.CALL+TELEPHONECallSkype
WINDOWS.CONTACT.MAPMapMaps
WINDOWS.CONTACT.MESSAGE+OUTLOOK.COMMessageSkype
WINDOWS.CONTACT.MESSAGE+SKYPE.COMMessageSkype
WINDOWS.CONTACT.MESSAGE+TELEPHONEMessageSkype
WINDOWS.CONTACT.POST+FACEBOOK.COMPostPeople
WINDOWS.CONTACT.POST+TWITTER.COMPostPeople
WINDOWS.CONTACT.VIDEOCALL+OUTLOOK.COMVideo callSkype
WINDOWS.CONTACT.VIDEOCALL+SKYPE.COMVideo callSkype
WINDOWSREADINGLISTURL:windowsreadinglistReading List
WLCALENDARURL:wlcalendarCalendar
WLPEOPLEURL:wlpeoplePeople
XBOXGAMESURL:xboxgamesGames
List complined by Yuri Pustjens.
Yuri Pustjens
About the Author

2014, 2015, 2016, 2017 and 2018 Microsoft Most Valuable Professional Windows
Yuri specializes in troubleshooting (crash analysis and devices), system resource utilisation and system performance. He is also very interested in Customer Security. Yuri can be found as Windows Community Moderator and Wiki Author on Microsoft Answers and is active on different communities all across the web.