diff --git a/windows/client-management/manage-device-installation-with-group-policy.md b/windows/client-management/manage-device-installation-with-group-policy.md index dbd56530c8..8895ab987f 100644 --- a/windows/client-management/manage-device-installation-with-group-policy.md +++ b/windows/client-management/manage-device-installation-with-group-policy.md @@ -84,9 +84,9 @@ In this scenario, combining all previous 4 scenarios, you will learn how to prot The following sections provide a brief overview of the core technologies discussed in this guide and give background information that is necessary to understand the scenarios. ### Device Installation in Windows -A device is a piece of hardware with which Windows interacts to perform some function, or in a more technical definition - it is a single instance of a hardware component with a unique representation in the Windows Plug and Play subsystem. Windows can communicate with a device only through a piece of software called a device-driver (aka ‘driver’). To install a driver, Windows detects the device, recognizes its type, and then finds the driver that matches that type. +A device is a piece of hardware with which Windows interacts to perform some function, or in a more technical definition - it is a single instance of a hardware component with a unique representation in the Windows Plug and Play subsystem. Windows can communicate with a device only through a piece of software called a device-driver (also known as a _driver_). To install a driver, Windows detects the device, recognizes its type, and then finds the driver that matches that type. -When Windows detects a device that has never been installed on the computer, the operating system queries the device to retrieve its list of device identification strings. A device usually has multiple device identification strings, which the device manufacturer assigns. The same device identification strings are included in the .inf file (aka INF) that is part of the driver package. Windows chooses which driver package to install by matching the device identification strings retrieved from the device to those included with the driver packages. +When Windows detects a device that has never been installed on the computer, the operating system queries the device to retrieve its list of device identification strings. A device usually has multiple device identification strings, which the device manufacturer assigns. The same device identification strings are included in the .inf file (also known as an _INF_) that is part of the driver package. Windows chooses which driver package to install by matching the device identification strings retrieved from the device to those included with the driver packages. Windows uses four types of identifiers to control device installation and configuration. You can use the Group Policy settings in Windows 10 to specify which of these identifiers to allow or block. @@ -120,7 +120,7 @@ Some physical devices create one or more logical devices when they are installed When you use Device Installation policies to allow or prevent the installation of a device that uses logical devices, you must allow or prevent all of the device identification strings for that device. For example, if a user attempts to install a multifunction device and you did not allow or prevent all of the identification strings for both physical and logical devices, you could get unexpected results from the installation attempt. For more detailed information about hardware IDs, see Device Identification Strings in Microsoft Docs. #### Device setup classes -Device setup classes (aka Class) are another type of identification string. The manufacturer assigns the Class to a device in the driver package. The Class groups devices that are installed and configured in the same way. For example, all Biometric devices are belong to the Biometric Class (ClassGuid = {53D29EF7-377C-4D14-864B-EB3A85769359}), and they use the same co-installer when installed. A long number called a globally unique identifier (GUID) represents each device setup class. When Windows starts, it builds an in-memory tree structure with the GUIDs for all of the detected devices. Along with the GUID for the Class of the device itself, Windows may need to insert into the tree the GUID for the Class of the bus to which the device is attached. +Device setup classes (also known as _Class_) are another type of identification string. The manufacturer assigns the Class to a device in the driver package. The Class groups devices that are installed and configured in the same way. For example, all Biometric devices are belong to the Biometric Class (ClassGuid = {53D29EF7-377C-4D14-864B-EB3A85769359}), and they use the same co-installer when installed. A long number called a globally unique identifier (GUID) represents each device setup class. When Windows starts, it builds an in-memory tree structure with the GUIDs for all of the detected devices. Along with the GUID for the Class of the device itself, Windows may need to insert into the tree the GUID for the Class of the bus to which the device is attached. When you use device Classes to allow or prevent users from installing drivers, you must specify the GUIDs for all of the device's device setup classes, or you might not achieve the results you want. The installation might fail (if you want it to succeed) or it might succeed (if you want it to fail).