Quality Windows Audio Video Experience - Windows 7 Service
Quality Windows Audio Video Experience (qWave) is a networking platform for Audio Video (AV) streaming applications on IP home networks. qWave enhances AV streaming performance and reliability by ensuring network quality-of-service (QoS) for AV applications. It provides mechanisms for admission control, run time monitoring and enforcement, application feedback, and traffic prioritization.
This service also exists in Windows 10, 11, 8 and Vista.
Startup Type
| Windows 7 edition | without SP | SP1 |
|---|---|---|
| Starter | Manual | Manual |
| Home Basic | Manual | Manual |
| Home Premium | Manual | Manual |
| Professional | Manual | Manual |
| Ultimate | Manual | Manual |
| Enterprise | Manual | Manual |
Default Properties
| Display name: | Quality Windows Audio Video Experience |
| Service name: | QWAVE |
| Type: | share |
| Path: | %WinDir%\system32\svchost.exe -k LocalServiceAndNoImpersonation |
| File: | %windir%\system32\qwave.dll |
| Error control: | normal |
| Object: | NT AUTHORITY\LocalService |
| Privileges: |
|
Default Behavior
The Quality Windows Audio Video Experience service runs as NT AUTHORITY\LocalService in a shared process. It shares the executable file with other services. If the Quality Windows Audio Video Experience fails to load or initialize, the error is recorded into the Event Log. Windows 7 startup should proceed, but a message box is displayed informing you that the QWAVE service has failed to start.
Dependencies
Quality Windows Audio Video Experience will not start, if the following services are stopped or disabled:
- Link-Layer Topology Discovery Mapper I/O Driver
- QoS Packet Scheduler
- QWAVE driver
- Remote Procedure Call (RPC)
Restore Default Startup Type of Quality Windows Audio Video Experience
Automated Restore
1. Select your Windows 7 edition and Service Pack, and then click on the Download button below.
2. Save the RestoreQualityWindowsAudioVideoExperienceWindows7.bat file to any folder on your hard drive.
3. Right-click the downloaded batch file and select Run as administrator.
4. Restart the computer to save changes.
Note. Make sure that the qwave.dll file exists in the %windir%\system32 folder. If this file is missing you can try to restore it from your Windows 7 installation media.