After a Windows Vista-based computer resumes from hibernation, the computer waits 30 seconds before it starts connecting to a new wireless network

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Article ID: 953270 - View products that this article applies to.
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SYMPTOMS

Consider the following scenario:
  • You connect a Windows Vista-based computer to a wireless network.
  • You put the computer into hibernation (S4).
  • The computer resumes from hibernation and then tries to connect to a new wireless network from its preferred network list.
In this scenario, the computer waits 30 seconds before it starts connecting to the new wireless network.

CAUSE

This issue occurs because the Nwifi.sys component waits 30 seconds for the wireless network scanning process to finish. If the original network cannot be found during this 30-second period, the computer tries to connect to a new wireless network from its preferred network list.

RESOLUTION

A hotfix is available to reduce this 30-second delay to 10 seconds.

Note If the computer takes longer than expected to connect to a wireless network, this hotfix may not resolve the issue to your satisfaction. This hotfix is intended only to reduce the length of the wireless network scanning process by 20 seconds.

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:
http://support.microsoft.com/contactus/?ws=support
Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix, you must have Windows Vista Service Pack 1 (SP1) installed.

Restart requirement

You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other previously released hotfixes.

Registry information

To use this hotfix, you do not have to make any changes to the registry.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.
Windows Vista with SP1, x86-based versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Package_1_for_kb953270_bf~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,88420-May-200823:26Not applicable
Package_1_for_kb953270~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable2,59420-May-200823:26Not applicable
Package_2_for_kb953270_bf~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,72920-May-200823:26Not applicable
Package_2_for_kb953270~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable2,43520-May-200823:26Not applicable
Package_for_kb953270_client_1_bf~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,34820-May-200823:26Not applicable
Package_for_kb953270_client_1~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,36720-May-200823:26Not applicable
Package_for_kb953270_client_bf~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,41120-May-200823:26Not applicable
Package_for_kb953270_client~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,43020-May-200823:26Not applicable
Package_for_kb953270_server_0_bf~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,39220-May-200823:26Not applicable
Package_for_kb953270_server_0~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,41120-May-200823:26Not applicable
Package_for_kb953270_server_bf~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,41120-May-200823:26Not applicable
Package_for_kb953270_server~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,43020-May-200823:26Not applicable
Update-bf.mumNot applicable2,01220-May-200823:26Not applicable
Update.mumNot applicable2,05220-May-200823:26Not applicable
X86_2b40b50a24a8bb85bfd9e238e8cf8495_31bf3856ad364e35_6.0.6001.18075_none_525ab0ee7126c1fc.manifestNot applicable70020-May-200823:26Not applicable
X86_4f5fe3ae700b4a68d82e22ef2e29294c_31bf3856ad364e35_6.0.6001.22183_none_6493a3dd794408c3.manifestNot applicable70020-May-200823:26Not applicable
X86_microsoft-windows-native-80211_31bf3856ad364e35_6.0.6001.18075_none_4ec1fb0e8f26c88a.manifestNot applicable5,17120-May-200806:06Not applicable
X86_microsoft-windows-native-80211_31bf3856ad364e35_6.0.6001.22183_none_4f3ec759a84e5197.manifestNot applicable5,17120-May-200804:20Not applicable
Nwifi.sys6.0.6001.18075148,48020-May-200802:07x86
Windows Vista with SP1, x64-based versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Amd64_21393fc601cfa30d7bb713bb08115309_31bf3856ad364e35_6.0.6001.18075_none_3c36b732f5dff0b7.manifestNot applicable70420-May-200823:26Not applicable
Amd64_8ff555177db2d15108f81ab86280c56d_31bf3856ad364e35_6.0.6001.22183_none_5e3b6ea33c0c07f5.manifestNot applicable70420-May-200823:26Not applicable
Amd64_microsoft-windows-native-80211_31bf3856ad364e35_6.0.6001.18075_none_aae09692478439c0.manifestNot applicable5,43520-May-200806:36Not applicable
Amd64_microsoft-windows-native-80211_31bf3856ad364e35_6.0.6001.22183_none_ab5d62dd60abc2cd.manifestNot applicable5,43520-May-200806:04Not applicable
Package_1_for_kb953270_bf~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,89620-May-200823:26Not applicable
Package_1_for_kb953270~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable2,61020-May-200823:26Not applicable
Package_2_for_kb953270_bf~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,73920-May-200823:26Not applicable
Package_2_for_kb953270~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable2,44920-May-200823:26Not applicable
Package_for_kb953270_client_1_bf~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,35620-May-200823:26Not applicable
Package_for_kb953270_client_1~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,37520-May-200823:26Not applicable
Package_for_kb953270_client_bf~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,41920-May-200823:26Not applicable
Package_for_kb953270_client~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,43820-May-200823:26Not applicable
Package_for_kb953270_server_0_bf~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,40020-May-200823:26Not applicable
Package_for_kb953270_server_0~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,41920-May-200823:26Not applicable
Package_for_kb953270_server_bf~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,41920-May-200823:26Not applicable
Package_for_kb953270_server~31bf3856ad364e35~amd64~~6.0.1.0.mumNot applicable1,43820-May-200823:26Not applicable
Update-bf.mumNot applicable2,02620-May-200823:26Not applicable
Update.mumNot applicable2,06620-May-200823:26Not applicable
Nwifi.sys6.0.6001.18075187,39220-May-200802:33x64

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

MORE INFORMATION

For more information, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates

Properties

Article ID: 953270 - Last Review: October 8, 2011 - Revision: 2.0
APPLIES TO
  • Windows Vista Service Pack 1, when used with:
    • Windows Vista Enterprise 64-bit Edition
    • Windows Vista Home Basic 64-bit Edition
    • Windows Vista Home Premium 64-bit Edition
    • Windows Vista Ultimate 64-bit Edition
    • Windows Vista Business
    • Windows Vista Business 64-bit Edition
    • Windows Vista Enterprise
    • Windows Vista Home Basic
    • Windows Vista Home Premium
    • Windows Vista Ultimate
Keywords: 
kbautohotfix kbexpertisebeginner kbfix kbqfe KB953270

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