advpack.dll assists with hardware and software installs by reading and verifying .INF files.
Windows-compatible hardware drivers and software often include .inf files, which assist in the installation process. Advpack.dll is a Dynamic Link Library file that is required by the Windows process used to read these .inf files.
If your version of advpack.dll is out of date, corrupted or missing, you may start seeing error messages that name this file as the cause of the error. You are most likely to see errors like these while trying to install or configure new hardware or software.