You use the Windows operating system based computer to complete many personal or professional works. Sometimes your computer use ASPI protocol to burn the software or applications on CDs or DVDs. But during the process, you may also get Wnaspi32.dll is missing error in Windows. It happens mainly due to the missing or corruption of the Wnaspi32.dll file. Actually the ASPI protocol runs with the help of the Wnaspi32.dll file. After occurring of the Wnaspi32.dll was not found error in your computer, you may lose the computer data or files. Therefore, it is very important to fix the Wnaspi32.dll is missing or not found error with the help of the manual or automatic methods. You can also use Advanced System Repair tool to fix the issue automatically.