Advapi64.dll Jun 2026

Advapi64.dll is a critical component of the Windows operating system. Many Windows applications and services rely on the functions provided by this DLL file to operate correctly. Without advapi64.dll, many system and application functions would not work as intended.

Deleting it will cause system instability and prevent many applications from launching. It is only a few hundred kilobytes, so it saves no meaningful disk space.

Advapi64.dll is a 64-bit DLL file that is part of the Windows API. The "adv" prefix stands for "advanced," and "api" stands for "application programming interface." This file provides a set of advanced functions that allow software developers to interact with the Windows operating system. These functions include: advapi64.dll

Some examples of Windows components that rely on advapi64.dll include:

If you find advapi64.dll anywhere else—such as your Desktop, Downloads folder, or inside a game’s installation directory—it is either a misplaced file, a false positive, or malware. Advapi64

While the functionality of advapi64.dll remains similar between Windows 10 and 11, there are minor version differences:

"Unable to launch game. advapi64.dll is missing. Reinstall the game." Deleting it will cause system instability and prevent

Before you begin, download advapi64.dll from third-party DLL download sites. These files are often outdated, infected with trojans, or mismatched with your Windows version.