Consider the following scenario:
- You have a Windows Embedded CE 6.0 R3-based device that has Network Address Translation (NAT) enabled.
- You use the device as a router.
- You run an application on the device that opens a connection to an external device. For example, you open a connection to an FTP server.
This issue occurs because the IP module on the device calculates the header size of the incoming packets incorrectly. This behavior causes some packets to be put into the wrong code path in the TCP/IP stack and not to be routed to the NAT module. Therefore, the sequence numbers of the expected packets that are calculated by the NAT module do not match the sequence number of the incoming packets. This causes the issue that is described in the "Symptoms" section.
Software update informationA supported software update is now available from Microsoft as Windows Embedded CE 6.0 Platform Builder Monthly Update (August 2010). You can confirm this by scrolling to the "File information" section of this article. The package file name contains the product version, date, Knowledge Base article number, and processor type. The package file name format is:
Product version-yymmdd-kbnnnnnn-processor type
For example: Wincepb50-060503-kb917590-armv4i.msi is the ARMV4i Windows CE 5.0 Platform Builder fix that is documented in KB article 917590 and that is contained in the May 2006 monthly update. To resolve this problem immediately, click the following article number for information about obtaining Windows CE Platform Builder and core operating system software updates:
837392 How to locate core operating system fixes for Microsoft Windows CE Platform Builder products
PrerequisitesThis update is supported only if all previously issued updates for this product have also been installed.
Restart requirementAfter you apply this update, you must perform a clean build of the whole platform. To do this, use one of the following methods:
- On the Build menu, click Clean Solution, and then click Build Solution.
- On the Build menu, click Rebuild Solution.
Update replacement informationThis update does not replace any other updates.
File informationThe English version of this software update package 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
tab in the
Date and Time
item in Control Panel.
|File name||File size||Date||Time|
Files that are included in this hotfix package
|File name||File size||Date||Time||Path|
|Windows embedded ce 6.0_update_kb2291255.htm||7,656||09-Aug-2010||21:55||100809_kb2291255|
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about software update terminology, 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
Article ID: 2291255 - Last Review: Sep 14, 2010 - Revision: 1