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Click through the registry until you find the following entries: HKEY_CLASSES_ROOT\*\shellex\ContextMenuHandlers HKEY_CLASSES_ROOT\AllFileSystemObjects\ShellEx HKEY_CLASSES_ROOT\Directory\shellex\ContextMenuHandlers For each of the entries above, review the menu items under them. Be careful on which entry you identify. If you'd like to disable a particular menu item, click on it from the left panel, and then modify the (Default) value on the right panel by putting a few dashes. Double-click the (Default) entry to bring out the actual contents. Add a few dashes in front of the Value Data and click "OK." This essentially disables the item without the need to delete it. This is useful in case you want to bring it back later. Repeat navigating to the other keys, identifying the menu items, and disabling the menu items for all the menu items you'd like to remove from the context menu.
Navigate to the keys. Identify menu items. Disable menu item. Continue through the rest of the menu items.