Article ID: 841066 - View products that this article applies to.
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 informationA supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem.
If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, submit a request to Microsoft Customer Service and Support to obtain the hotfix.
Note If additional issues occur or if 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. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:
PrerequisitesNo prerequisites are required.
Restart requirementYou must restart your computer after you apply this hotfix.
Hotfix replacement informationThis hotfix replaces:
838250This hotfix is replaced by:
(http://support.microsoft.com/kb/838250/ )FIX: The POSIX subsystem for Interix does not start successfully after Windows Server 2003 Service Pack 1 (S838250) is installed
(http://support.microsoft.com/kb/841898/ )FIX: You cannot create more processes when many Win32 processes are called from Interix
File informationThe 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
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.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.