Select the product you need help with

Patch Available for USB Isochronous Data Transfers Issues

Article ID: 307271 - View products that this article applies to.

This article was previously published under Q307271

Expand all | Collapse all

SYMPTOMS

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.

Back to the top | Give Feedback

CAUSE

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.

Back to the top | Give Feedback

RESOLUTION

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:

322389

(http://support.microsoft.com/kb/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:

311220

(http://support.microsoft.com/kb/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:

Collapse this imageExpand this image

Download Q314582_wxp_sp1_x86_enu.exe now

(http://www.microsoft.com/downloads/details.aspx?FamilyID=d5b1c022-7ac5-4f6f-b5b2-032489fca6e4&DisplayLang=en)

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:

119591

(http://support.microsoft.com/kb/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:

Collapse this imageExpand this image

Download Q316397_wxp_sp1_x86_enu.exe now

(http://www.microsoft.com/downloads/details.aspx?FamilyID=2c35aa44-cd9f-4424-922a-8e98bc1a0a2c&DisplayLang=en)

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:

119591

(http://support.microsoft.com/kb/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

NOTE: 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:

316397

(http://support.microsoft.com/kb/316397/EN-US/ )

Windows XP Real-Time Communication Client Support for Network Address Translation

Back to the top | Give Feedback

STATUS

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.

Back to the top | Give Feedback