Microsoft KB Archive/318128

= Short Pause Occurs Before Windows XP Recognizes Your New Hardware Device =

Article ID: 318128

Article Last Modified on 1/15/2006

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APPLIES TO


 * Microsoft Windows XP Home Edition
 * Microsoft Windows XP Professional

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This article was previously published under Q318128



SYMPTOMS
After you install a new hardware device, you may experience a short pause before the device is recognized by Windows XP. The device is not available to other programs on your computer until Windows XP recognizes it.

For example, Windows XP may take up to 15 seconds to update the modem status from Not present to COM  (in the Modem tool in Control Panel) after you install a new U.S. Robotics Voice Faxmodem Pro USB modem. Therefore, any program that tries to use the modem cannot use it until the modem is recognized by Windows XP.

NOTE: Windows 2000 may take only a few seconds to recognize the new hardware device after it is installed.



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 How to Obtain the Latest Windows XP Service Pack



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows XP Service Pack 1.



MORE INFORMATION
If a program uses the Remote Access Service (RAS) application programming interface (API) or the Telephony API (TAPI) to communicate with a USB modem, these APIs may not work for approximately 15 seconds after you install and turn on the modem.

The third-party products that are discussed in this article are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.

Keywords: kbbug kbpending kbwinxpsp1fix KB318128

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