Symptoms

Consider the following scenario:

  • You configure a Windows Embedded Compact 7-based device to support Dial-Up Networking (DUN) profiles.

  • You add two external modems to the Windows Embedded Compact 7-based device.

  • You run an application that calls the RasDial function to connect the device to a dial-up network through the external modem.


In this scenario, you may receive the following error message when the RasDial function is called:

ERROR_PORT_NOT_AVAILABLE(633)

Note This problem typically occurs when you specify multiple external modems in the registry for a device.

Cause

This problem occurs because of a race condition in the Unimodem model that causes an incorrect port name to be used when the RasDial function is called.

Resolution

Software update information

A supported software update is now available from Microsoft as Windows Embedded Compact 7 Monthly Update May 2012. In the "File information" section, the package file name contains the processor type.

Note This Windows Embedded Compact 7 monthly update is available for download from the following Microsoft Download Center website:

Windows Embedded Compact 7 Updates

Prerequisites

This update is supported only if all previously issued updates for this product have also been installed.

Restart requirement

After 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.

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

Update replacement information

This update does not replace any other updates.

File information

The 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 Time Zone tab in the Date and Time item in Control Panel.

Files that are included in this update package

File name

File size

Date

Time

Path

Misc.c

45,423

25-May-2012

18:27

Private\Winceos\Comm\Tapi\Unimodem

Unimodem.dll

118,784

25-May-2012

18:22

Public\Common\Oak\Target\Armv5\Checked

Unimodem.dll

159,744

25-May-2012

18:22

Public\Common\Oak\Target\Armv5\Debug

Unimodem.dll

57,344

25-May-2012

18:22

Public\Common\Oak\Target\Armv5\Retail

Unimodem.dll

118,784

25-May-2012

18:23

Public\Common\Oak\Target\Armv6\Checked

Unimodem.dll

159,744

25-May-2012

18:23

Public\Common\Oak\Target\Armv6\Debug

Unimodem.dll

57,344

25-May-2012

18:23

Public\Common\Oak\Target\Armv6\Retail

Unimodem.dll

118,784

25-May-2012

18:24

Public\Common\Oak\Target\Armv7\Checked

Unimodem.dll

159,744

25-May-2012

18:23

Public\Common\Oak\Target\Armv7\Debug

Unimodem.dll

57,344

25-May-2012

18:23

Public\Common\Oak\Target\Armv7\Retail

Unimodem.dll

139,264

25-May-2012

18:24

Public\Common\Oak\Target\Mipsii\Checked

Unimodem.dll

180,224

25-May-2012

18:24

Public\Common\Oak\Target\Mipsii\Debug

Unimodem.dll

65,536

25-May-2012

18:24

Public\Common\Oak\Target\Mipsii\Retail

Unimodem.dll

139,264

25-May-2012

18:25

Public\Common\Oak\Target\Mipsii_fp\Checked

Unimodem.dll

180,224

25-May-2012

18:25

Public\Common\Oak\Target\Mipsii_fp\Debug

Unimodem.dll

65,536

25-May-2012

18:25

Public\Common\Oak\Target\Mipsii_fp\Retail

Unimodem.dll

114,688

25-May-2012

18:26

Public\Common\Oak\Target\Sh4\Checked

Unimodem.dll

147,456

25-May-2012

18:26

Public\Common\Oak\Target\Sh4\Debug

Unimodem.dll

53,248

25-May-2012

18:26

Public\Common\Oak\Target\Sh4\Retail

Unimodem.dll

106,496

25-May-2012

18:27

Public\Common\Oak\Target\X86\Checked

Unimodem.dll

139,264

25-May-2012

18:27

Public\Common\Oak\Target\X86\Debug

Unimodem.dll

45,056

25-May-2012

18:26

Public\Common\Oak\Target\X86\Retail

References

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

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