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KyleMit ♦
KyleMit ♦
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If you want to squash it globally,The Default Application Associations for all users, edit are stored in the C:\Windows\System32\OEMDefaultAssociations.xmlfollowing file:

C:\Windows\System32\OEMDefaultAssociations.xml

ForFind extensions or protocols that use edge and change them to chrome, for example, here's my OEMDefaultAssociations.xml fileyou can replace the following associations:

<Association Identifier=".htm" ProgId="MSEdgeHTM" ApplicationName="Microsoft Edge" />
<Association Identifier=".html" ProgId="MSEdgeHTM" ApplicationName="Microsoft Edge" />
<Association Identifier="http" ProgId="MSEdgeHTM" ApplicationName="Microsoft Edge" />
<Association Identifier="https" ProgId="MSEdgeHTM" ApplicationName="Microsoft Edge" />

To open in chrome instead:

<Association Identifier=".htm" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
<Association Identifier=".html" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
<Association Identifier="http" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
<Association Identifier="https" ProgId="ChromeHTML" ApplicationName="Google Chrome" />

You can change whatever associations you'd like, but should leave the rest in place. I have a script that pulls this file down from an S3 bucket and applies it as part of the machine provisioning process.

<?xml version="1.0" encoding="UTF-8"?>
<DefaultAssociations>
  <Association Identifier=".3g2" ProgId="WMP11.AssocFile.3G2" ApplicationName="Windows Media Player" />
  <Association Identifier=".3gp" ProgId="WMP11.AssocFile.3GP" ApplicationName="Windows Media Player" />
  <Association Identifier=".3gp2" ProgId="WMP11.AssocFile.3G2" ApplicationName="Windows Media Player" />
  <Association Identifier=".3gpp" ProgId="WMP11.AssocFile.3GP" ApplicationName="Windows Media Player" />
  <Association Identifier=".aac" ProgId="WMP11.AssocFile.ADTS" ApplicationName="Windows Media Player" />
  <Association Identifier=".adt" ProgId="WMP11.AssocFile.ADTS" ApplicationName="Windows Media Player" />
  <Association Identifier=".adts" ProgId="WMP11.AssocFile.ADTS" ApplicationName="Windows Media Player" />
  <Association Identifier=".avi" ProgId="WMP11.AssocFile.AVI" ApplicationName="Windows Media Player" />
  <Association Identifier=".bmp" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".dib" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".flac" ProgId="WMP11.AssocFile.FLAC" ApplicationName="Windows Media Player" />
  <Association Identifier=".gif" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".jfif" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".jpe" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".jpeg" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".jpg" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".m2t" ProgId="WMP11.AssocFile.M2TS" ApplicationName="Windows Media Player" />
  <Association Identifier=".m2ts" ProgId="WMP11.AssocFile.M2TS" ApplicationName="Windows Media Player" />
  <Association Identifier=".m3u" ProgId="WMP11.AssocFile.m3u" ApplicationName="Windows Media Player" />
  <Association Identifier=".m4a" ProgId="WMP11.AssocFile.M4A" ApplicationName="Windows Media Player" />
  <Association Identifier=".m4v" ProgId="WMP11.AssocFile.MP4" ApplicationName="Windows Media Player" />
  <Association Identifier=".mkv" ProgId="WMP11.AssocFile.MKV" ApplicationName="Windows Media Player" />
  <Association Identifier=".mod" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".mov" ProgId="WMP11.AssocFile.MOV" ApplicationName="Windows Media Player" />
  <Association Identifier=".MP2" ProgId="WMP11.AssocFile.MP3" ApplicationName="Windows Media Player" />
  <Association Identifier=".mp3" ProgId="WMP11.AssocFile.MP3" ApplicationName="Windows Media Player" />
  <Association Identifier=".mp4" ProgId="WMP11.AssocFile.MP4" ApplicationName="Windows Media Player" />
  <Association Identifier=".mp4v" ProgId="WMP11.AssocFile.MP4" ApplicationName="Windows Media Player" />
  <Association Identifier=".mpa" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".MPE" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".mpeg" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".mpg" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".mpv2" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".mts" ProgId="WMP11.AssocFile.M2TS" ApplicationName="Windows Media Player" />
  <Association Identifier=".png" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".tif" ProgId="PhotoViewer.FileAssoc.Tiff" ApplicationName="Windows Photo Viewer" />
  <Association Identifier=".tiff" ProgId="PhotoViewer.FileAssoc.Tiff" ApplicationName="Windows Photo Viewer" />
  <Association Identifier=".TS" ProgId="WMP11.AssocFile.TTS" ApplicationName="Windows Media Player" />
  <Association Identifier=".TTS" ProgId="WMP11.AssocFile.TTS" ApplicationName="Windows Media Player" />
  <Association Identifier=".txt" ProgId="txtfile" ApplicationName="Notepad" />
  <Association Identifier=".url" ProgId="IE.AssocFile.URL" ApplicationName="Internet Browser" />
  <Association Identifier=".wav" ProgId="WMP11.AssocFile.WAV" ApplicationName="Windows Media Player" />
  <Association Identifier=".website" ProgId="IE.AssocFile.WEBSITE" ApplicationName="Internet Explorer" />
  <Association Identifier=".wm" ProgId="WMP11.AssocFile.ASF" ApplicationName="Windows Media Player" />
  <Association Identifier=".wma" ProgId="WMP11.AssocFile.WMA" ApplicationName="Windows Media Player" />
  <Association Identifier=".wmv" ProgId="WMP11.AssocFile.WMV" ApplicationName="Windows Media Player" />
  <Association Identifier=".WPL" ProgId="WMP11.AssocFile.WPL" ApplicationName="Windows Media Player" />
  <Association Identifier=".htm" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
  <Association Identifier=".html" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
  <Association Identifier=".url" ProgId="IE.AssocFile.URL" ApplicationName="Google Chrome" />
  <Association Identifier=".webp" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
  <Association Identifier="ftp" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
  <Association Identifier="http" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
  <Association Identifier="https" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
</DefaultAssociations>

For example, here's my entire OEMDefaultAssociations.xml file:

<?xml version="1.0" encoding="UTF-8"?>
<DefaultAssociations>
  <Association Identifier=".3g2" ProgId="WMP11.AssocFile.3G2" ApplicationName="Windows Media Player" />
  <Association Identifier=".3gp" ProgId="WMP11.AssocFile.3GP" ApplicationName="Windows Media Player" />
  <Association Identifier=".3gp2" ProgId="WMP11.AssocFile.3G2" ApplicationName="Windows Media Player" />
  <Association Identifier=".3gpp" ProgId="WMP11.AssocFile.3GP" ApplicationName="Windows Media Player" />
  <Association Identifier=".aac" ProgId="WMP11.AssocFile.ADTS" ApplicationName="Windows Media Player" />
  <Association Identifier=".adt" ProgId="WMP11.AssocFile.ADTS" ApplicationName="Windows Media Player" />
  <Association Identifier=".adts" ProgId="WMP11.AssocFile.ADTS" ApplicationName="Windows Media Player" />
  <Association Identifier=".avi" ProgId="WMP11.AssocFile.AVI" ApplicationName="Windows Media Player" />
  <Association Identifier=".bmp" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".dib" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".flac" ProgId="WMP11.AssocFile.FLAC" ApplicationName="Windows Media Player" />
  <Association Identifier=".gif" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".jfif" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".jpe" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".jpeg" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".jpg" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".m2t" ProgId="WMP11.AssocFile.M2TS" ApplicationName="Windows Media Player" />
  <Association Identifier=".m2ts" ProgId="WMP11.AssocFile.M2TS" ApplicationName="Windows Media Player" />
  <Association Identifier=".m3u" ProgId="WMP11.AssocFile.m3u" ApplicationName="Windows Media Player" />
  <Association Identifier=".m4a" ProgId="WMP11.AssocFile.M4A" ApplicationName="Windows Media Player" />
  <Association Identifier=".m4v" ProgId="WMP11.AssocFile.MP4" ApplicationName="Windows Media Player" />
  <Association Identifier=".mkv" ProgId="WMP11.AssocFile.MKV" ApplicationName="Windows Media Player" />
  <Association Identifier=".mod" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".mov" ProgId="WMP11.AssocFile.MOV" ApplicationName="Windows Media Player" />
  <Association Identifier=".MP2" ProgId="WMP11.AssocFile.MP3" ApplicationName="Windows Media Player" />
  <Association Identifier=".mp3" ProgId="WMP11.AssocFile.MP3" ApplicationName="Windows Media Player" />
  <Association Identifier=".mp4" ProgId="WMP11.AssocFile.MP4" ApplicationName="Windows Media Player" />
  <Association Identifier=".mp4v" ProgId="WMP11.AssocFile.MP4" ApplicationName="Windows Media Player" />
  <Association Identifier=".mpa" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".MPE" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".mpeg" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".mpg" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".mpv2" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".mts" ProgId="WMP11.AssocFile.M2TS" ApplicationName="Windows Media Player" />
  <Association Identifier=".png" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".tif" ProgId="PhotoViewer.FileAssoc.Tiff" ApplicationName="Windows Photo Viewer" />
  <Association Identifier=".tiff" ProgId="PhotoViewer.FileAssoc.Tiff" ApplicationName="Windows Photo Viewer" />
  <Association Identifier=".TS" ProgId="WMP11.AssocFile.TTS" ApplicationName="Windows Media Player" />
  <Association Identifier=".TTS" ProgId="WMP11.AssocFile.TTS" ApplicationName="Windows Media Player" />
  <Association Identifier=".txt" ProgId="txtfile" ApplicationName="Notepad" />
  <Association Identifier=".url" ProgId="IE.AssocFile.URL" ApplicationName="Internet Browser" />
  <Association Identifier=".wav" ProgId="WMP11.AssocFile.WAV" ApplicationName="Windows Media Player" />
  <Association Identifier=".website" ProgId="IE.AssocFile.WEBSITE" ApplicationName="Internet Explorer" />
  <Association Identifier=".wm" ProgId="WMP11.AssocFile.ASF" ApplicationName="Windows Media Player" />
  <Association Identifier=".wma" ProgId="WMP11.AssocFile.WMA" ApplicationName="Windows Media Player" />
  <Association Identifier=".wmv" ProgId="WMP11.AssocFile.WMV" ApplicationName="Windows Media Player" />
  <Association Identifier=".WPL" ProgId="WMP11.AssocFile.WPL" ApplicationName="Windows Media Player" />
  <Association Identifier=".htm" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
  <Association Identifier=".html" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
  <Association Identifier=".url" ProgId="IE.AssocFile.URL" ApplicationName="Google Chrome" />
  <Association Identifier=".webp" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
  <Association Identifier="ftp" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
  <Association Identifier="http" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
  <Association Identifier="https" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
</DefaultAssociations>

If you want to squash it globally, for all users, edit the C:\Windows\System32\OEMDefaultAssociations.xml

For example, here's my OEMDefaultAssociations.xml file. I have a script that pulls this file down from an S3 bucket and applies it as part of the machine provisioning process.

<?xml version="1.0" encoding="UTF-8"?>
<DefaultAssociations>
  <Association Identifier=".3g2" ProgId="WMP11.AssocFile.3G2" ApplicationName="Windows Media Player" />
  <Association Identifier=".3gp" ProgId="WMP11.AssocFile.3GP" ApplicationName="Windows Media Player" />
  <Association Identifier=".3gp2" ProgId="WMP11.AssocFile.3G2" ApplicationName="Windows Media Player" />
  <Association Identifier=".3gpp" ProgId="WMP11.AssocFile.3GP" ApplicationName="Windows Media Player" />
  <Association Identifier=".aac" ProgId="WMP11.AssocFile.ADTS" ApplicationName="Windows Media Player" />
  <Association Identifier=".adt" ProgId="WMP11.AssocFile.ADTS" ApplicationName="Windows Media Player" />
  <Association Identifier=".adts" ProgId="WMP11.AssocFile.ADTS" ApplicationName="Windows Media Player" />
  <Association Identifier=".avi" ProgId="WMP11.AssocFile.AVI" ApplicationName="Windows Media Player" />
  <Association Identifier=".bmp" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".dib" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".flac" ProgId="WMP11.AssocFile.FLAC" ApplicationName="Windows Media Player" />
  <Association Identifier=".gif" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".jfif" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".jpe" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".jpeg" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".jpg" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".m2t" ProgId="WMP11.AssocFile.M2TS" ApplicationName="Windows Media Player" />
  <Association Identifier=".m2ts" ProgId="WMP11.AssocFile.M2TS" ApplicationName="Windows Media Player" />
  <Association Identifier=".m3u" ProgId="WMP11.AssocFile.m3u" ApplicationName="Windows Media Player" />
  <Association Identifier=".m4a" ProgId="WMP11.AssocFile.M4A" ApplicationName="Windows Media Player" />
  <Association Identifier=".m4v" ProgId="WMP11.AssocFile.MP4" ApplicationName="Windows Media Player" />
  <Association Identifier=".mkv" ProgId="WMP11.AssocFile.MKV" ApplicationName="Windows Media Player" />
  <Association Identifier=".mod" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".mov" ProgId="WMP11.AssocFile.MOV" ApplicationName="Windows Media Player" />
  <Association Identifier=".MP2" ProgId="WMP11.AssocFile.MP3" ApplicationName="Windows Media Player" />
  <Association Identifier=".mp3" ProgId="WMP11.AssocFile.MP3" ApplicationName="Windows Media Player" />
  <Association Identifier=".mp4" ProgId="WMP11.AssocFile.MP4" ApplicationName="Windows Media Player" />
  <Association Identifier=".mp4v" ProgId="WMP11.AssocFile.MP4" ApplicationName="Windows Media Player" />
  <Association Identifier=".mpa" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".MPE" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".mpeg" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".mpg" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".mpv2" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".mts" ProgId="WMP11.AssocFile.M2TS" ApplicationName="Windows Media Player" />
  <Association Identifier=".png" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".tif" ProgId="PhotoViewer.FileAssoc.Tiff" ApplicationName="Windows Photo Viewer" />
  <Association Identifier=".tiff" ProgId="PhotoViewer.FileAssoc.Tiff" ApplicationName="Windows Photo Viewer" />
  <Association Identifier=".TS" ProgId="WMP11.AssocFile.TTS" ApplicationName="Windows Media Player" />
  <Association Identifier=".TTS" ProgId="WMP11.AssocFile.TTS" ApplicationName="Windows Media Player" />
  <Association Identifier=".txt" ProgId="txtfile" ApplicationName="Notepad" />
  <Association Identifier=".url" ProgId="IE.AssocFile.URL" ApplicationName="Internet Browser" />
  <Association Identifier=".wav" ProgId="WMP11.AssocFile.WAV" ApplicationName="Windows Media Player" />
  <Association Identifier=".website" ProgId="IE.AssocFile.WEBSITE" ApplicationName="Internet Explorer" />
  <Association Identifier=".wm" ProgId="WMP11.AssocFile.ASF" ApplicationName="Windows Media Player" />
  <Association Identifier=".wma" ProgId="WMP11.AssocFile.WMA" ApplicationName="Windows Media Player" />
  <Association Identifier=".wmv" ProgId="WMP11.AssocFile.WMV" ApplicationName="Windows Media Player" />
  <Association Identifier=".WPL" ProgId="WMP11.AssocFile.WPL" ApplicationName="Windows Media Player" />
  <Association Identifier=".htm" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
  <Association Identifier=".html" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
  <Association Identifier=".url" ProgId="IE.AssocFile.URL" ApplicationName="Google Chrome" />
  <Association Identifier=".webp" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
  <Association Identifier="ftp" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
  <Association Identifier="http" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
  <Association Identifier="https" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
</DefaultAssociations>

The Default Application Associations for all users are stored in the following file:

C:\Windows\System32\OEMDefaultAssociations.xml

Find extensions or protocols that use edge and change them to chrome, for example, you can replace the following associations:

<Association Identifier=".htm" ProgId="MSEdgeHTM" ApplicationName="Microsoft Edge" />
<Association Identifier=".html" ProgId="MSEdgeHTM" ApplicationName="Microsoft Edge" />
<Association Identifier="http" ProgId="MSEdgeHTM" ApplicationName="Microsoft Edge" />
<Association Identifier="https" ProgId="MSEdgeHTM" ApplicationName="Microsoft Edge" />

To open in chrome instead:

<Association Identifier=".htm" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
<Association Identifier=".html" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
<Association Identifier="http" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
<Association Identifier="https" ProgId="ChromeHTML" ApplicationName="Google Chrome" />

You can change whatever associations you'd like, but should leave the rest in place. I have a script that pulls this file down from an S3 bucket and applies it as part of the machine provisioning process.

For example, here's my entire OEMDefaultAssociations.xml file:

<?xml version="1.0" encoding="UTF-8"?>
<DefaultAssociations>
  <Association Identifier=".3g2" ProgId="WMP11.AssocFile.3G2" ApplicationName="Windows Media Player" />
  <Association Identifier=".3gp" ProgId="WMP11.AssocFile.3GP" ApplicationName="Windows Media Player" />
  <Association Identifier=".3gp2" ProgId="WMP11.AssocFile.3G2" ApplicationName="Windows Media Player" />
  <Association Identifier=".3gpp" ProgId="WMP11.AssocFile.3GP" ApplicationName="Windows Media Player" />
  <Association Identifier=".aac" ProgId="WMP11.AssocFile.ADTS" ApplicationName="Windows Media Player" />
  <Association Identifier=".adt" ProgId="WMP11.AssocFile.ADTS" ApplicationName="Windows Media Player" />
  <Association Identifier=".adts" ProgId="WMP11.AssocFile.ADTS" ApplicationName="Windows Media Player" />
  <Association Identifier=".avi" ProgId="WMP11.AssocFile.AVI" ApplicationName="Windows Media Player" />
  <Association Identifier=".bmp" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".dib" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".flac" ProgId="WMP11.AssocFile.FLAC" ApplicationName="Windows Media Player" />
  <Association Identifier=".gif" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".jfif" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".jpe" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".jpeg" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".jpg" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".m2t" ProgId="WMP11.AssocFile.M2TS" ApplicationName="Windows Media Player" />
  <Association Identifier=".m2ts" ProgId="WMP11.AssocFile.M2TS" ApplicationName="Windows Media Player" />
  <Association Identifier=".m3u" ProgId="WMP11.AssocFile.m3u" ApplicationName="Windows Media Player" />
  <Association Identifier=".m4a" ProgId="WMP11.AssocFile.M4A" ApplicationName="Windows Media Player" />
  <Association Identifier=".m4v" ProgId="WMP11.AssocFile.MP4" ApplicationName="Windows Media Player" />
  <Association Identifier=".mkv" ProgId="WMP11.AssocFile.MKV" ApplicationName="Windows Media Player" />
  <Association Identifier=".mod" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".mov" ProgId="WMP11.AssocFile.MOV" ApplicationName="Windows Media Player" />
  <Association Identifier=".MP2" ProgId="WMP11.AssocFile.MP3" ApplicationName="Windows Media Player" />
  <Association Identifier=".mp3" ProgId="WMP11.AssocFile.MP3" ApplicationName="Windows Media Player" />
  <Association Identifier=".mp4" ProgId="WMP11.AssocFile.MP4" ApplicationName="Windows Media Player" />
  <Association Identifier=".mp4v" ProgId="WMP11.AssocFile.MP4" ApplicationName="Windows Media Player" />
  <Association Identifier=".mpa" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".MPE" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".mpeg" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".mpg" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".mpv2" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".mts" ProgId="WMP11.AssocFile.M2TS" ApplicationName="Windows Media Player" />
  <Association Identifier=".png" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".tif" ProgId="PhotoViewer.FileAssoc.Tiff" ApplicationName="Windows Photo Viewer" />
  <Association Identifier=".tiff" ProgId="PhotoViewer.FileAssoc.Tiff" ApplicationName="Windows Photo Viewer" />
  <Association Identifier=".TS" ProgId="WMP11.AssocFile.TTS" ApplicationName="Windows Media Player" />
  <Association Identifier=".TTS" ProgId="WMP11.AssocFile.TTS" ApplicationName="Windows Media Player" />
  <Association Identifier=".txt" ProgId="txtfile" ApplicationName="Notepad" />
  <Association Identifier=".url" ProgId="IE.AssocFile.URL" ApplicationName="Internet Browser" />
  <Association Identifier=".wav" ProgId="WMP11.AssocFile.WAV" ApplicationName="Windows Media Player" />
  <Association Identifier=".website" ProgId="IE.AssocFile.WEBSITE" ApplicationName="Internet Explorer" />
  <Association Identifier=".wm" ProgId="WMP11.AssocFile.ASF" ApplicationName="Windows Media Player" />
  <Association Identifier=".wma" ProgId="WMP11.AssocFile.WMA" ApplicationName="Windows Media Player" />
  <Association Identifier=".wmv" ProgId="WMP11.AssocFile.WMV" ApplicationName="Windows Media Player" />
  <Association Identifier=".WPL" ProgId="WMP11.AssocFile.WPL" ApplicationName="Windows Media Player" />
  <Association Identifier=".htm" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
  <Association Identifier=".html" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
  <Association Identifier=".url" ProgId="IE.AssocFile.URL" ApplicationName="Google Chrome" />
  <Association Identifier=".webp" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
  <Association Identifier="ftp" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
  <Association Identifier="http" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
  <Association Identifier="https" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
</DefaultAssociations>
Source Link
NitrusCS
NitrusCS
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If you want to squash it globally, for all users, edit the C:\Windows\System32\OEMDefaultAssociations.xml

For example, here's my OEMDefaultAssociations.xml file. I have a script that pulls this file down from an S3 bucket and applies it as part of the machine provisioning process.

<?xml version="1.0" encoding="UTF-8"?>
<DefaultAssociations>
  <Association Identifier=".3g2" ProgId="WMP11.AssocFile.3G2" ApplicationName="Windows Media Player" />
  <Association Identifier=".3gp" ProgId="WMP11.AssocFile.3GP" ApplicationName="Windows Media Player" />
  <Association Identifier=".3gp2" ProgId="WMP11.AssocFile.3G2" ApplicationName="Windows Media Player" />
  <Association Identifier=".3gpp" ProgId="WMP11.AssocFile.3GP" ApplicationName="Windows Media Player" />
  <Association Identifier=".aac" ProgId="WMP11.AssocFile.ADTS" ApplicationName="Windows Media Player" />
  <Association Identifier=".adt" ProgId="WMP11.AssocFile.ADTS" ApplicationName="Windows Media Player" />
  <Association Identifier=".adts" ProgId="WMP11.AssocFile.ADTS" ApplicationName="Windows Media Player" />
  <Association Identifier=".avi" ProgId="WMP11.AssocFile.AVI" ApplicationName="Windows Media Player" />
  <Association Identifier=".bmp" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".dib" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".flac" ProgId="WMP11.AssocFile.FLAC" ApplicationName="Windows Media Player" />
  <Association Identifier=".gif" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".jfif" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".jpe" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".jpeg" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".jpg" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".m2t" ProgId="WMP11.AssocFile.M2TS" ApplicationName="Windows Media Player" />
  <Association Identifier=".m2ts" ProgId="WMP11.AssocFile.M2TS" ApplicationName="Windows Media Player" />
  <Association Identifier=".m3u" ProgId="WMP11.AssocFile.m3u" ApplicationName="Windows Media Player" />
  <Association Identifier=".m4a" ProgId="WMP11.AssocFile.M4A" ApplicationName="Windows Media Player" />
  <Association Identifier=".m4v" ProgId="WMP11.AssocFile.MP4" ApplicationName="Windows Media Player" />
  <Association Identifier=".mkv" ProgId="WMP11.AssocFile.MKV" ApplicationName="Windows Media Player" />
  <Association Identifier=".mod" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".mov" ProgId="WMP11.AssocFile.MOV" ApplicationName="Windows Media Player" />
  <Association Identifier=".MP2" ProgId="WMP11.AssocFile.MP3" ApplicationName="Windows Media Player" />
  <Association Identifier=".mp3" ProgId="WMP11.AssocFile.MP3" ApplicationName="Windows Media Player" />
  <Association Identifier=".mp4" ProgId="WMP11.AssocFile.MP4" ApplicationName="Windows Media Player" />
  <Association Identifier=".mp4v" ProgId="WMP11.AssocFile.MP4" ApplicationName="Windows Media Player" />
  <Association Identifier=".mpa" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".MPE" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".mpeg" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".mpg" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".mpv2" ProgId="WMP11.AssocFile.MPEG" ApplicationName="Windows Media Player" />
  <Association Identifier=".mts" ProgId="WMP11.AssocFile.M2TS" ApplicationName="Windows Media Player" />
  <Association Identifier=".png" ProgId="PBrush" ApplicationName="Paint" />
  <Association Identifier=".tif" ProgId="PhotoViewer.FileAssoc.Tiff" ApplicationName="Windows Photo Viewer" />
  <Association Identifier=".tiff" ProgId="PhotoViewer.FileAssoc.Tiff" ApplicationName="Windows Photo Viewer" />
  <Association Identifier=".TS" ProgId="WMP11.AssocFile.TTS" ApplicationName="Windows Media Player" />
  <Association Identifier=".TTS" ProgId="WMP11.AssocFile.TTS" ApplicationName="Windows Media Player" />
  <Association Identifier=".txt" ProgId="txtfile" ApplicationName="Notepad" />
  <Association Identifier=".url" ProgId="IE.AssocFile.URL" ApplicationName="Internet Browser" />
  <Association Identifier=".wav" ProgId="WMP11.AssocFile.WAV" ApplicationName="Windows Media Player" />
  <Association Identifier=".website" ProgId="IE.AssocFile.WEBSITE" ApplicationName="Internet Explorer" />
  <Association Identifier=".wm" ProgId="WMP11.AssocFile.ASF" ApplicationName="Windows Media Player" />
  <Association Identifier=".wma" ProgId="WMP11.AssocFile.WMA" ApplicationName="Windows Media Player" />
  <Association Identifier=".wmv" ProgId="WMP11.AssocFile.WMV" ApplicationName="Windows Media Player" />
  <Association Identifier=".WPL" ProgId="WMP11.AssocFile.WPL" ApplicationName="Windows Media Player" />
  <Association Identifier=".htm" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
  <Association Identifier=".html" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
  <Association Identifier=".url" ProgId="IE.AssocFile.URL" ApplicationName="Google Chrome" />
  <Association Identifier=".webp" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
  <Association Identifier="ftp" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
  <Association Identifier="http" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
  <Association Identifier="https" ProgId="ChromeHTML" ApplicationName="Google Chrome" />
</DefaultAssociations>