Microsoft KB Archive/841066

= Windows processes cannot access a serial port after an Interix process uses the serial port =

Article ID: 841066

Article Last Modified on 11/15/2007

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APPLIES TO


 * Microsoft Windows Services for UNIX 3.5

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SYMPTOMS
After an Interix process uses a serial port and then closes, Microsoft Windows processes cannot access the serial port.

For example, after the Igetty process uses a serial port and then closes, the HyperTerminal process cannot access the serial port.



Hotfix information
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that this article describes. Apply this hotfix only to systems that are experiencing this specific problem.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or 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. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
No prerequisites are required.

Restart requirement
You must restart your computer after you apply this hotfix.

Hotfix replacement information
This hotfix replaces:

838250 FIX: The POSIX subsystem for Interix does not start successfully after Windows Server 2003 Service Pack 1 (S838250) is installed

This hotfix is replaced by:

841898 FIX: You cannot create more processes when many Win32 processes are called from Interix

File information
The English version of this hotfix has the file attributes (or later) 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 tool in Control Panel.   Date         Time   Version            Size    File name --  30-Apr-2004  22:41  8.0.1969.5        763,904  Psxss.exe



WORKAROUND
To work around this problem, release the serial port. To do this, stop the Interix Subsystem Startup service.

To restart the Interix Subsystem Startup service, restart the computer.



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

Additional query words: POSIX portable operating system UNIX SFU

Keywords: kbfix kbbug kbqfe kbhotfixserver KB841066

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