You may experience one or more of the following problems in
Windows XP:
- When you are listening to audio over Universal Serial Bus
(USB) speakers, you may hear a pop. This may occur from every few seconds to
every few minutes.
- When you are connected to the Internet via an USB modem,
you may encounter data transfer errors or even lose connection during heavy
transfers.
This issue occurs because frames are being dropped on the
USB bus during isochronous data transfers. This may affect functionality of any
USB device using this mode of data transfer.
To resolve this problem, obtain the latest service
pack for Windows XP. For additional information, click the following article
number to view the article in the Microsoft Knowledge Base:
322389Â
(http://kbalertz.com/Feedback.aspx?kbNumber=322389/EN-US/
)
How to Obtain the Latest Windows XP Service Pack
Microsoft has released an update to address this
problem. You can apply a software update either during or after Windows XP
Setup.
Apply Software Update During Windows XP Setup
To prevent this issue from occurring when you upgrade to Windows
XP, click
Yes, download the updated Setup files (Recommended) in the
Get Updated Setup Files dialog box during Setup, and then click
Next.
NOTE: Corporate Administrators can deploy Dynamic Update for Windows
XP Professional Setup in a corporate environment so that clients do not have to
connect to the Windows Update Web site during Windows XP Setup.
For additional information about how to do this, click the
article number below to view the article in the Microsoft Knowledge Base:
311220Â
(http://kbalertz.com/Feedback.aspx?kbNumber=311220/EN-US/
)
Description of the Dynamic Update Feature in Windows XP Setup
The following file is available for download from the Microsoft
Download Center:
Release Date:
February 6, 2002
For additional information about how to download
Microsoft Support files, click the following article number to view the article
in the Microsoft Knowledge Base:
119591Â
(http://kbalertz.com/Feedback.aspx?kbNumber=119591/EN-US/
)
How to Obtain Microsoft Support Files from Online Services
Microsoft scanned this file for viruses. Microsoft used the most
current virus-detection software that was available on the date that the file
was posted. The file is stored on security-enhanced servers that help to
prevent any unauthorized changes to the file.
The English-language version of this fix should have the
following file attributes or later:
Date Time Version Size File name Platform
--------------------------------------------------------------------
06-Sep-2001 11:00 5.1.2600.11 18,944 Usbuhci.sys i386
06-Sep-2001 11:00 5.1.2600.11 67,072 Usbuhci.sys Itanium 64-bit
Apply Software Update After Windows XP Setup
If you did not download the updated Setup files during the Setup
procedure, you can obtain the patch from the Microsoft Download
Center.
The
following file is available for download from the Microsoft Download
Center:
Release Date:
February 25, 2002
For additional information about how to download
Microsoft Support files, click the following article number to view the article
in the Microsoft Knowledge Base:
119591Â
(http://kbalertz.com/Feedback.aspx?kbNumber=119591/EN-US/
)
How to Obtain Microsoft Support Files from Online Services
Microsoft scanned this file for viruses. Microsoft used the most
current virus-detection software that was available on the date that the file
was posted. The file is stored on secure servers that prevent any unauthorized
changes to the file.
The English-language version of
this software update should have the following file attributes or later:
Date Time Version Size File name
------------------------------------------------------
12-Oct-2001 14:10 5.1.2601.0 139,264 Aec.sys
11-Dec-2001 16:43 5.1.2600.16 844,288 Dxmrtp.dll
06-Feb-2002 15:41 5.1.2600.28 549,888 Rtcdll.dll
12-Oct-2001 14:22 5.1.2600.16 6,016 Splitter.sys
27-Nov-2001 14:20 5.1.2600.21 56,832 Usbaudio.sys
30-Jan-2002 18:07 5.1.2600.28 19,200 Usbuhci.sys
The original version of this software update has been superseded
by the Windows Messenger Update for Audio/Video and Voice.Net.
For additional information about the new patch, click
the article number below to view the article in the Microsoft Knowledge Base:
316397Â
(http://kbalertz.com/Feedback.aspx?kbNumber=316397/EN-US/
)
Windows XP Real-Time Communication Client Support for Network Address Translation
Microsoft
has confirmed that this is a problem in the Microsoft products that are listed
in the "Applies to" section. This problem was first corrected in Windows XP Service
Pack 1.