Last Known Good Configuration

(n.) In versions NT and later of the Windows operating system (OS), a copy of a system’s hardware configuration and driver settings taken from the system’s registry when the OS successfully boots. This copy is stored in case a subsequent boot process fails, and the OS can use the record of the Last Known Good configuration to perform a successful boot. If Windows detects a problem in the boot process, it will add the Last Known Good configuration option to the start up menu.

This configuration record often comes in handy after the installation of new drivers or devices, which may cause system errors. Each time the OS successfully boots, it replaces the previous Last Known Good configuration record with the new one from the most recent successful boot.

See The History of Microsoft Operating Systems in Webopedia’s “Did You Know…? section.

Webopedia Staff
Webopedia Staff
Since 1995, more than 100 tech experts and researchers have kept Webopedia’s definitions, articles, and study guides up to date. For more information on current editorial staff, please visit our About page.

Related Articles

Software

Table of contents What is Software? History of Software Software vs. Hardware Software vs. Hardware Comparison Chart What Types of Software Exist? Saas vs....

Email Address

What is an Email Address? An email address is a designation for an electronic mailbox that sends and receives messages, known as email, on a...

Information Technology (IT) Architect

The information technology architect applies IT resources to meet specific business requirements. The role requires a high degree of technical expertise as well as...

Built-In Function

A built-in function is a function that is already available in a programming language, application, or another tool that can be accessed by end...

Geotargeting

Geotargeting is a method of delivering data or content to users based on...

Agile Project Management

Agile project management enables business teams to approach their projects and tasks with...

Private 5G Network

A private 5G network is a private local area network (LAN) that utilizes...