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
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.

Top Articles

The Complete List of 1500+ Common Text Abbreviations & Acronyms

From A3 to ZZZ we list 1,559 SMS, online chat, and text abbreviations to help you translate and understand today's texting lingo. Includes Top...

Windows Operating System History & Versions

The Windows operating system (Windows OS) refers to a family of operating systems developed by Microsoft Corporation. We look at the history of Windows...

How to Create a Website Shortcut on Your Desktop

Website Shortcut on Your Desktop reviewed by Web Webster   This Webopedia guide will show you how to create a website shortcut on your desktop using...

Generations of Computers (1st to 5th)

Reviewed by Web Webster Learn about each of the 5 generations of computers and major technology developments that have led to the computing devices that...

SAP Software

SAP is an end-to-end enterprise solution provider specializing in enterprise resource...

Chief Operating Officer (COO)

The chief operating officer (COO) is a member of a company's senior executive...

Kanban

Kanban is a workflow management method intended to define, manage, and improve services...