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If I update the Default Mail Application / mailto Protocol through the GUI to Outlook, the Please remember to mark the replies as answers if they help and unmark them if they provide no help. I my opinion you can better use GPO to achieve your goal. How to associate file extensions with application on Windows by PowerShell Set-ItemProperty 'HKCU:\Software\Microsoft\Windows\Shell\Associations\UrlAssociations\https\UserChoice' -name ProgId IE.HTTPS Set-ItemProperty you can change the file association.įor default browser: Set-ItemProperty 'HKCU:\Software\Microsoft\Windows\Shell\Associations\UrlAssociations\http\UserChoice' -name ProgId IE.HTTP Regarding my investigation, the UrlAssociations are stored in HHKCU:\Software\Microsoft\Windows\Shell\Associations\UrlAssociations\ with the I think, GPO is better managing in file asseciations than using Powershell in this situation.
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Set the default browser using Group Policy. Already tried to use Group Policy to manage the file associations? For more information:
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