Solved

Unable to open com2. Device is already open.

Posted on 1997-06-02
2
809 Views
Last Modified: 2013-12-16
I tried to connect to the Internet without success. I used an external modem connected to com2 port running under windows 3.11.  The error message I got was thet the com2 port was already open, This implied that my com2 port was being accessed by another program. I have no program running that accessed the com2 port except the communication program (I tested the connection using Win 3.11's Terminal program only. ) A quick check using MSD indicated the presence of com2 with the correct IRQ3. A quick test of the com2 port with a mouse connected to it  indicated the com2 port was fine. The com2 port was working okay under Win 3.1 before I updated it to  Win 3.11.

Can anyone provide any hint to my problem?
0
Comment
Question by:lesoch
2 Comments
 
LVL 1

Accepted Solution

by:
daadams earned 100 total points
ID: 1775624
Ok, lets see if we can unravel this. It seems that you have a IRQ conflict somewhere. I would check and make sure that no other device is using IRQ 3 Your mouse should be on COM 1 IRQ 4 and your modem should be on COM 2, IRQ 3.  Do you have a sound card make sure it is not on IRQ 3. Usually sound cards are on IRQ 5.
I am not sure how a new installation of windows could affect this but it is possible. I hope this is of some help.
                    Allen Adams
0
 

Author Comment

by:lesoch
ID: 1775625
The IRQ was okay. No conflict detected. BTW, I'm using a notebook which used PS-2-like mouse at IRQ 12. The com1 is not used but was tested fine when an external mouse was attached.
0

Featured Post

Live: Real-Time Solutions, Start Here

Receive instant 1:1 support from technology experts, using our real-time conversation and whiteboard interface. Your first 5 minutes are always free.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

If you need to start windows update installation remotely or as a scheduled task you will find this very helpful.
While rebooting windows server 2003 server , it's showing "active directory rebuilding indices please wait" at startup. It took a little while for this process to complete and once we logged on not all the services were started so another reboot is …
Windows 8 comes with a dramatically different user interface known as Metro. Notably missing from the new interface is a Start button and Start Menu. Many users do not like it, much preferring the interface of earlier versions — Windows 7, Windows X…
With the advent of Windows 10, Microsoft is pushing a Get Windows 10 icon into the notification area (system tray) of qualifying computers. There are many reasons for wanting to remove this icon. This two-part Experts Exchange video Micro Tutorial s…

786 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question