| Users | Filename | Product | Company | Version | Variant |
|---|---|---|---|---|---|
| 25.64% | %SYSDIR% \ wmsperf.dll | Microsoft® Windows Media Services | Microsoft Corporation | 9.1.1.3841 | 18107726 |
| 20.51% | %SYSDIR% \ wmsperf.dll | Microsoft® Windows Media® Services | Microsoft Corporation | 9.6.7600.16564 | 7822771 |
| 12.82% | %SYSDIR% \ wmsperf.dll | Microsoft® Windows Media Services | Microsoft Corporation | 9.1.1.3841 | 6979363 |
| 12.82% | %SYSDIR% \ wmsperf.dll | Microsoft® Windows Media Services | Microsoft Corporation | 9.1.1.3841 | 7646486 |
| 10.26% | %SYSDIR% \ wmsperf.dll | Microsoft® Windows Media Services | Microsoft Corporation | 9.1.1.3841 | 21580755 |
| 5.13% | %SYSDIR% \ wmsperf.dll | Microsoft® Windows Media Services | Microsoft Corporation | 9.1.1.3841 | 5367645 |
| 5.13% | %SYSDIR% \ wmsperf.dll | Microsoft® Windows Media Services | Microsoft Corporation | 9.1.1.3841 | 6408331 |
| 5.13% | %SYSDIR% \ wmsperf.dll | Microsoft® Windows Media Services | Microsoft Corporation | 9.1.1.3841 | 6493829 |
| 2.56% | %SYSDIR% \ wmsperf.dll | Microsoft® Windows Media Services | Microsoft Corporation | 9.1.1.3841 | 8014728 |