How to discover which program is utilising a COM port

[cjpd]

Hi All

I am having a problem getting a usb to serial converter working on my
pc. Essentially, the arrangement creates a virtual com port (which
installs as COM5 on my pc). Whilst "Device Manager" says that the
virtual com port is installed correctly, applications which try to use
the device on COM5 cannot get access. For example, Hyperterminal says
that the com port is in use by another program.

I have tried killing all appiclations and process which I know are
non-essential but cannot seem to free up the com port. Is there some
way of knowing what applications/processes are accessing the various
com ports?

Many thanks
Chris

 

[Dave Patrick]

Here you go.

http://www.sysinternals.com/Utilities/Portmon.html

--

Regards,

Dave Patrick ....Please no email replies - reply in newsgroup.
Microsoft Certified Professional
Microsoft MVP [Windows]
http://www.microsoft.com/protect

| Hi All
|
| I am having a problem getting a usb to serial converter working on my
| pc. Essentially, the arrangement creates a virtual com port (which
| installs as COM5 on my pc). Whilst "Device Manager" says that the
| virtual com port is installed correctly, applications which try to use
| the device on COM5 cannot get access. For example, Hyperterminal says
| that the com port is in use by another program.
|
| I have tried killing all appiclations and process which I know are
| non-essential but cannot seem to free up the com port. Is there some
| way of knowing what applications/processes are accessing the various
| com ports?
|
| Many thanks
| Chris
|

 

[cjpd]

Many thanks Dave - I will give that a go.
Chris

 

[Dave Patrick]

You're welcome.

--

Regards,

Dave Patrick ....Please no email replies - reply in newsgroup.
Microsoft Certified Professional
Microsoft MVP [Windows]
http://www.microsoft.com/protect

| Many thanks Dave - I will give that a go.
| Chris