Several problems may occur after you apply security update 930178 (MS07-021) on a Windows XP SP2-based computer or on a Windows 2000 SP4-based computer

You may experience one of the following symptoms on a Windows XP SP2-based computer or on a Windows 2000 SP4-based computer after you apply security update 930178 (MS07-021).

Symptom 1

Consider the following scenario. On a Windows XP SP2-based computer or on a Windows 2000 SP4-based computer, you use the Certificate Import Wizard to import a certificate into the Trusted Root Certification Authorities Certificates store. In this scenario, a blank message appears. The message contains a Yes button and a No button. If you click Yes, the certificate is installed successfully.

Instead of a blank message, you expect to receive the following confirmation message:Note In this message, CAName is a placeholder for the name of the certification authority, and Certificate_Information is a placeholder for the information about the particular certificate.

You experience this problem if you run the Certificate Import Wizard by using an account that does not have Administrator rights.

Symptom 2

You log on to a Windows XP SP2-based portable computer by using an account that does not have Administrator rights. Then, even though the battery power is low, the text balloon warning for Low Battery Alarm does not appear in the notification area. You may still receive a yellow triangle exclamation point in the notification area. However, you may not receive the text balloon warning.

Symptom 3

You experience slow performance on a Windows XP SP2-based portable computer. Additionally, the computer may stop responding when the Low Battery Alarm warning occurs. This symptom occurs when the following conditions are true:

• You log on to the computer by using an account that does not have Administrator rights.
• You log on to the computer by using the Switch User option.

Windows XP download information

The following file is available for download from the Microsoft Download Center:

Download the Update for Windows XP (KB940275) package now. (http://www.microsoft.com/downloads/details.aspx?FamilyId=28B16887-9456-4707-84AA-BE867CF9779E)

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base: 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 prevent any unauthorized changes to the file.

Windows XP 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: 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 XP Service Pack 2 (SP2) installed on the computer.

Restart requirement

You have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

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 XP with Service Pack 2, x86-based versions

Windows 2000 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: 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 2000 Service Pack 4 (SP4) installed on the computer.

Restart requirement

You have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

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 2000 with Service Pack 4, x86-based versions

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

To install a certificate on the computer, follow these steps:

1. Locate the certificate file that you want to install on the computer.
   
   Note A certificate file has a .crt file name extension.
2. Double-click the certificate file, and then click the General tab.
3. Click Install Certificate.
4. In the Certificate Import Wizard, click Next.
5. Click Automatically select the certificate store based on the type of certificate, click Next, and then click Finish.

For more information about security update MS07-021, visit the following Microsoft Web site: For more information about the standard terminology that is used to describe Microsoft software updates, click the following article number to view the article in the Microsoft Knowledge Base: