Don't warn about website opening the product when using Office URI

By default, when user clicks an Office URI link, Internet Explorer issues a warning that a website is trying to open a program, and asks for confirmation.

This setting allows to disable the warning for Office URIs supported by the product (ms-word:, ms-excel:, ms-powerpoint:, ms-visio:, ms-access:, vnd.libreoffice.command:). Remember that this setting may be overridden by user if set in user settings.

When enabled, no warning will be issued when user clicks a supported Office URI link.
When disabled, the warning will be issued in this case.

Supported on: Collabora Office 5.3 or higher

Enable policy:
Registry PathValue NameValue TypeValue
Software\Microsoft\Internet Explorer\ProtocolExecute\ms-wordWarnOnOpenREG_DWORD0
Software\Microsoft\Internet Explorer\ProtocolExecute\ms-powerpointWarnOnOpenREG_DWORD0
Software\Microsoft\Internet Explorer\ProtocolExecute\ms-excelWarnOnOpenREG_DWORD0
Software\Microsoft\Internet Explorer\ProtocolExecute\ms-accessWarnOnOpenREG_DWORD0
Software\Microsoft\Internet Explorer\ProtocolExecute\vnd.libreoffice.commandWarnOnOpenREG_DWORD0
Software\Wow6432Node\Microsoft\Internet Explorer\ProtocolExecute\ms-wordWarnOnOpenREG_DWORD0
Software\Wow6432Node\Microsoft\Internet Explorer\ProtocolExecute\ms-powerpointWarnOnOpenREG_DWORD0
Software\Wow6432Node\Microsoft\Internet Explorer\ProtocolExecute\ms-excelWarnOnOpenREG_DWORD0
Software\Wow6432Node\Microsoft\Internet Explorer\ProtocolExecute\ms-accessWarnOnOpenREG_DWORD0
Software\Wow6432Node\Microsoft\Internet Explorer\ProtocolExecute\vnd.libreoffice.commandWarnOnOpenREG_DWORD0
Disable Policy:
Registry HiveRegistry PathValue NameValue TypeValue
HKEY_LOCAL_MACHINE or HKEY_CURRENT_USERSoftware\Microsoft\Internet Explorer\ProtocolExecute\ms-wordWarnOnOpenREG_DWORD1
HKEY_LOCAL_MACHINE or HKEY_CURRENT_USERSoftware\Microsoft\Internet Explorer\ProtocolExecute\ms-powerpointWarnOnOpenREG_DWORD1
HKEY_LOCAL_MACHINE or HKEY_CURRENT_USERSoftware\Microsoft\Internet Explorer\ProtocolExecute\ms-excelWarnOnOpenREG_DWORD1
HKEY_LOCAL_MACHINE or HKEY_CURRENT_USERSoftware\Microsoft\Internet Explorer\ProtocolExecute\ms-accessWarnOnOpenREG_DWORD1
HKEY_LOCAL_MACHINE or HKEY_CURRENT_USERSoftware\Microsoft\Internet Explorer\ProtocolExecute\vnd.libreoffice.commandWarnOnOpenREG_DWORD1
HKEY_LOCAL_MACHINE or HKEY_CURRENT_USERSoftware\Wow6432Node\Microsoft\Internet Explorer\ProtocolExecute\ms-wordWarnOnOpenREG_DWORD1
HKEY_LOCAL_MACHINE or HKEY_CURRENT_USERSoftware\Wow6432Node\Microsoft\Internet Explorer\ProtocolExecute\ms-powerpointWarnOnOpenREG_DWORD1
HKEY_LOCAL_MACHINE or HKEY_CURRENT_USERSoftware\Wow6432Node\Microsoft\Internet Explorer\ProtocolExecute\ms-excelWarnOnOpenREG_DWORD1
HKEY_LOCAL_MACHINE or HKEY_CURRENT_USERSoftware\Wow6432Node\Microsoft\Internet Explorer\ProtocolExecute\ms-accessWarnOnOpenREG_DWORD1
HKEY_LOCAL_MACHINE or HKEY_CURRENT_USERSoftware\Wow6432Node\Microsoft\Internet Explorer\ProtocolExecute\vnd.libreoffice.commandWarnOnOpenREG_DWORD1

collabora-office.admx

Administrative Templates (Computers)

Administrative Templates (Users)