APOs are sometimes loaded into the audiosrv service, and COM won't unload the DLL for 15 minutes after it is used. That may be what you're seeing. From: wdmaudiodev-bounce@xxxxxxxxxxxxx [mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Wayne Sent: Tuesday, December 30, 2008 5:48 PM To: wdmaudiodev@xxxxxxxxxxxxx Subject: [wdmaudiodev] Re: how to restart AudioDG Thanks, it works! And I also encounter the situation where the apo dll is still in use even stop audiosrv. Any one know why? On Sat, Dec 27, 2008 at 3:04 AM, <timr@xxxxxxxxx<mailto:timr@xxxxxxxxx>> wrote: On Thu, Dec 25, 2008 at 08:24:45PM +0800, Wayne wrote: > > Does anyone know how to restart AudioDG without reboot PC? > This may save lot of time when installing APO requently. You can try this: net stop audiosrv net start audiosrv However, depending on how the devices have been used and the phase of the moon, sometimes that's not enough to reload the APOs. -- Tim Roberts, timr@xxxxxxxxx<mailto:timr@xxxxxxxxx> Providenza & Boeklheide, Inc. ****************** WDMAUDIODEV addresses: Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx<mailto:wdmaudiodev@xxxxxxxxxxxxx> Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx<mailto:wdmaudiodev-request@xxxxxxxxxxxxx>?subject=subscribe Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx<mailto:wdmaudiodev-request@xxxxxxxxxxxxx>?subject=unsubscribe Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx<mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx> URL to WDMAUDIODEV page: http://www.wdmaudiodev.com/