Seeing DLL errors is not uncommon, time-to-time users reported the DLL missing or not found error on their screen. And the advpack.dll missing or not found is one commonly reported error on Windows 11, 10, 8.1, 8 and 7.
The advpack.dll is a Win32 DLL file and was generated by Microsoft for use in Internet Explorer. And it supports the software and hardware installation by reading and then authenticating the .INF files.