The file qasf(ver_2).dll is a support process for the DirectShow ASF from Microsoft. ASF (Advanced Systems Format) is Microsoft’s proprietary digital audio/video format, usually used for streaming media. DirectShow is an API (application programming interface) made by Microsoft to handle media.
To put it more plainly, the qasf(ver_2) dynamic link library file helps you play Microsoft format online audio and video on your computer. An error with this file may make it impossible to play some multimedia from the internet.
Most dll errors are a problem in the Windows registry. Fixing such errors can be a simple matter of moving a dll file to the correct spot, or may be a difficult task involving editing the registry. Without specialized knowledge in Windows, editing the registry can be a dangerous task that might disable your computer.
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