wnaspi32.dll Error Fix

What is a DLL?

DLL (Dynamic Link Library) files contain computer code and resources that can be used by multiple programs at the same time. This uses less system memory and helps your computer system run more efficiently. DLL files give program developers the ability to reuse code to add features to several programs without the need to write new code for each program.

There are many programs that require DLL files to function properly so when one of them is damaged or missing it will cause program crashes and poor system performance.

What is wnaspi32.dll?

The Advanced SCSI Programming Interface (ASPI) is an established system of accessing drives which is commonly supported by the CDROM reading/ripping software. The module that is used by Windows when communicating with storage devices is the DLL wnaspi32.dll.

The file wnaspi32.dll supports the ASPI interface. It standardizes communication on a computer bus between a SCSI (Small Computer System Interface) host adapter and SCSI peripherals. ASPI provides hardware and platform independence and a high-level function set through the wnaspi32.dll file. It is easy to use and it shortens development time. The ASPI manager handles details of arbitration, selection, message passing, and returning status codes and sense data when appropriate. It passes data through to the SCSI device without modifying or inspecting it.

The program file wnaspi32.dll defines a set of high-level functions for communicating with devices attached to the SCSI bus. It is designed to protect users from the pitfalls of hardware-level programming and provide a standard interface to SCSI host adapters.

The wnaspi32.dll program was developed by Adaptec Inc. Adaptec is one of the industry’s suppliers of simple cost-effective storage technology solutions. The company provides one of the industry’s broadest storage solution suites from chips to internal host bus adapters and from RAID controllers to external storage area networks as well as the software applications built to extend storage functionality and value.

The wnaspi32.dll file is also a component of WinBackup which is an application designed to create backups for emails, images, and a host of other files. WinBackup makes it easier to secure data by making regular backups. It also protects your data using the latest encryption techniques contained in the wnaspi32.dll module. Other software applications such as Nero and Roxio also utilize the wnaspi32.dll file.

Recommended fix if you are experiencing wnaspi32.dll error messages:

DLL files are important parts of your operating system and many programs require them to function. When these files become damaged or are missing it causes poor system performance and system crashes. To fix these problems the user must replace the damaged file with a valid working version. If a working version cannot be found the user may perform a reinstallation of their operating system.

Wnaspi32.dll is created by:

Microsoft Corporation

Known file path:



Click the Download button below to run a free dll scan to find out if you have missing or corrupt dll files on your computer.

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