Windows processes cannot access a serial port after an Interix process uses the serial port (841066)


The information in this article applies to:

  • Microsoft Windows Services for UNIX 3.5

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.

RESOLUTION

Hotfix information

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

To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

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

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

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 "Applies to" section.
Modification Type:MinorLast Reviewed:6/2/2006
Keywords:kbfix kbBug kbQFE kbHotfixServer KB841066 kbAudITPRO kbAudDeveloper
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