Microsoft KB Archive/317279

= Serial.sys Does Not Power Devices On If &quot;EnablePowerManagement&quot; Is Set =

Article ID: 317279

Article Last Modified on 1/31/2007

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APPLIES TO


 * Microsoft Windows 2000 Service Pack 1
 * Microsoft Windows 2000 Service Pack 2
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Service Pack 1
 * Microsoft Windows 2000 Service Pack 2
 * Microsoft Windows XP Home Edition
 * Microsoft Windows XP Professional

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This article was previously published under Q317279



SYMPTOMS
If you set the EnablePowerManagement registry value to 1 as specified in the following Microsoft Knowledge Base article, Serial.sys does not power on the attached device when you resume the computer from standby:

275042 Modem Powers Off When It Is Not in Use



Windows XP
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Windows XP service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

NOTE: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The typical support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English version of this fix for Windows XP should have the following file attributes or later:   Date         Time   Version      Size    File name ---  18-Feb-2002  19:19  5.1.2600.29  60,800  Serial.sys

Windows 2000
To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

260910 How to Obtain the Latest Windows 2000 Service Pack

The English version of this fix for Windows 2000 should have the following file attributes or later:   Date         Time   Version        Size    File name -  06-Mar-2002  11:06  5.0.2195.5031  60,720  Serial.sys



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 2000 Service Pack 3.



MORE INFORMATION
For additional information about how to obtain a hotfix for Windows 2000 Datacenter Server, click the article number below to view the article in the Microsoft Knowledge Base:

265173 The Datacenter Program and Windows 2000 Datacenter Server Product

For additional information about how to install multiple hotfixes with only one reboot, click the article number below to view the article in the Microsoft Knowledge Base:

296861 Use QChain.exe to Install Multiple Hotfixes with One Reboot

Additional query words: kbBaseOS

Keywords: kbbug kbfix kbwin2000presp3fix kbqfe kbwin2000sp3fix kboswin2000fix kbhotfixserver KB317279

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