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This setting allows you to decide which programs are listed in "Open With" dialog box which is shown when an unknown file type is opened.

Open your registry and find the key [HKEY_CLASSES_ROOT\Applications]. Under this key are a series of sub-keys representing the installed applications.

To stop a specific application appearing in the "Open With" list select the associated sub-key and create a new empty string value called "NoOpenWith".

To allow an application to be shown in the list delete the "NoOpenWith" value.

Restart Windows for the change to take effect.

		(Default)	REG_SZ	(value not set)
		NoOpenWith	REG_SZ

	HKEY_CLASSES_ROOT\Applications

Related Tweaks

• Show or Hide "Open With" Program Checkbox (All Windows)

Disclaimer: Modifying the registry can cause serious problems that may require you to reinstall your operating system. We cannot guarantee that problems resulting from modifications to the registry can be solved. Use the information provided at your own risk.