This article was previously published under Q145810
IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:
256986 Description of the Microsoft Windows Registry
When you use the right mouse button to click an .inf file, the Installcommand may not be available on the context menu that appears.
The Install command may not be available if the default association for.inf files is changed from the default value. This is often done by usingthe right mouse button to click an .inf file while holding down the SHIFTkey, selecting a different program to open the .inf file, and thenselecting the "Always use this program to open this type of file" checkbox.
WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.
To enable the Install command for .inf files, use any one of the following methods:
NOTE: For information about how to edit the registry, view the Changing Keys And Values online Help topic in Registry Editor (Regedit.exe). Note that you should make a backup copy of the registry files (System.dat and User.dat) before you edit the registry.
WARNING: Using Registry Editor incorrectly can cause serious problems that may require you to reinstall Windows. Microsoft cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk.
Change the "(Default)" value in the HKEY_CLASSES_ROOT\.inf registry key to inffile. Restart your computer for this change to take effect.
Restore the standard shell commands. To do so, click the Start button, click Run, type the following line in the Open box, and then click OK: