Microsoft KB Archive/935777

= FIX: The buffer size of the InternetQueryOptionW function is half of its actual size if you use INTERNET_OPTION_URL as the second parameter in Internet Explorer 7 =

Article ID: 935777

Article Last Modified on 10/27/2007

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APPLIES TO


 * Windows Internet Explorer 7
 * Windows Internet Explorer 7 for Windows Server 2003 IA64
 * Windows Internet Explorer 7 for Windows XP
 * Windows Internet Explorer 7 for Windows Server 2003
 * Windows Internet Explorer 7 in Windows Vista

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SYMPTOMS
The InternetQueryOptionW function should set the fourth parameter in bytes. The fourth parameter is used to set the buffer size. However, if you use INTERNET_OPTION_URL as the second parameter in Windows Internet Explorer 7, the buffer size is set in character numbers. Therefore, the buffer size is half of its actual size.

Note This problem does not occur in earlier versions of Internet Explorer or in the InternetQueryOptionA function.



CAUSE
This problem occurs because of an error in the Wininet.dll file.



Security update information
To resolve this problem, install the most current cumulative security update for Internet Explorer. To install the most current updates, visit the following Microsoft Web site:

http://windowsupdate.microsoft.com

For more technical information about the most current cumulative security update for Internet Explorer, visit the following Microsoft Web site:

http://www.microsoft.com/technet/security/current.aspx

Note This fix was first included in security update 937143 (MS07-045). For more information, click the following article number to view the article in the Microsoft Knowledge Base:

937143 MS07-045: Cumulative Security Update for Internet Explorer

Prerequisites
You must have Microsoft Windows XP Service Pack 2 (SP2) or Windows Server 2003 SP2 installed to apply this hotfix.

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 Vista, x86-based versions


STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; 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

For more information about the InternetQueryOption function, visit the following Microsoft Developer Network (MSDN) Web site:

http://msdn2.microsoft.com/en-us/library/aa385101.aspx

For more information about option flags, visit the following MSDN Web site:

http://msdn2.microsoft.com/en-us/library/aa385328.aspx

For more information about WinINet functions, visit the following MSDN Web site:

http://msdn2.microsoft.com/en-us/library/aa385331.aspx

Keywords: kbfix kbqfe kbpubtypekc atdownload kbexpertiseadvanced kbhotfixserver KB935777

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