A com port is a common name to refer to a serial interface on an IBM compatible PC. (Either virtual or physical)

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How to determine what is occupying a COM port

The Device Manager image below shows that devices occupy COM ports 4, 5, 6, and 7. Attempts to move the device from 7 to 13 failed because 13 was allegedly occupied. Reboot did not resolve this ...
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How to check COM ports in Windows 10?

Just like we can check COM ports in windows 7 or lower , by going to Control Panel >> Device Manager >> Ports How should we check it in Windows 10?
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How to make com1 port accessible to remote desktop users

Application hangs if running under RDP with user privileges. If running under Admin privileges it works. Application log shows that it tries to access COM1 port in server. It looks like this may cause ...
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178 views

How to add Android phone as a COM port in Windows 10 (via Bluetooth)?

My phone is Meizu M2, which I'd like to connect with my Windows 10 PC (via Bluetooth). I'm using an external bluetooth adapter for the PC. There's an android app called "Arduino Bluetooth RC Car" ...
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How can I find out the COM number of a serial device?

today I had to configure an Ethernet Switch (AT-8000GS/48) via serial console to turn on stacking mode and so on. I used a RJ45 to Serial-9-Pin to USB adaptor. First, I tried to use PuTTY under ...
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Configure UART/COM in Linux using Hyper-V Generation 2 VM

I've setup Linux Mint x64 in Hyper-V as a Generation 2 Virtual Machine on my Windows 10 desktop. I would like to attach a USB->Serial converter (FT232RL) to the VM, so I can program and debug embedded ...
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57 views

Read data from COM port

I am trying to read data from device(http://www.genee-india.com/interactive-whiteboards/genee-powerboard/) wirelessly. Port Details:. com port Silicon Labs CP210X USB to UART Bridge(COM5). ...
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114 views

Use USB printing support as a com device

I have a piece of hardware that can output content from its parallel port. I have a need to consume the data using a USB cable connected to my PC. So I connected the machine with a USB to Parallel ...
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3answers
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How to map a virtual COM port to a physical USB port?

My question is similar to Setting up a virtual Com Port?, which has no answers. I have software that can only print to a printer on COMx, a printer with a USB port, and a computer with a USB port but ...
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1answer
326 views

How to add/delete rules in Windows Firewall [closed]

I need to implement a tool which adds and deletes rules in Windows Firewall. The rules can be inbound or outbound, forbidding communication on specified protocols, IPs and ports. I am having trouble ...
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125 views

Where to set advanced settings for serial port on linux

I use a special USB to serial adapter to get data from legacy hardware. Under Windows i have to set some advanced settings in order to start sending data in a way the devices can "understand" and ...
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39 views

COM visible DLL only registered for Administrators

I have a 64-bit DLL and I also have an installer for this dll. This installer registers the dll as com visible. To do this i have to be admin. Everything works fine so far and i also can use the dll ...
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VirtualBox: create a serial port bridge to the same VM

I'd like to make a bridge between Serial Port 1 and Serial Port 2 on a VM. Practically this would route all data from VM Serial Port 1 back to VM Serial Port 2 so that an application listening on ...
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1answer
561 views

How can I register a (32-bit) COM DLL as a COM+ application

I heard that you can register a 32 COM server DLL in COM+ so it will be executed as local server instead of an in-process server. This solves a 64/32 bit issue, it would be possible to access the ...
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394 views

Simplest way to send characters to USB serial device on Mac using script

I have a simple serial device that I need to talk to (but not listen to) periodically via command. The device is connected OK as /dev/usbxxx. What is the simplest/easiest way to do this? Installing ...
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Executable fails to launch over RDP but works fine on physical machine

I have an executable written in C# running on Windows Server 2012 r2 If I start it, when I am working on the physical computer, it works just fine. But if I am logged into the computer through RDP it ...
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408 views

No COM1 port on hyper-v

I just made a fresh Windows 8.1 install and am trying to set-up a VM for kernel debugging. Therefore, I need to create a serial link to debug the VM using windbg. Usually I just simply add a new COM ...
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195 views

Why do I have to manually add Local Activation permission for domain account even if it's a member of the local Administrators group?

A SQL Server 2012 agent job was failing with: The application-specific permission settings do not grant Local Activation permission for the COM Server application with CLSID {...} and APPID ...
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Cannot Delete Unwanted COM ports - Windows 7

I recently installed a Cannon wireless printer for temporary use, the drivers of which set nearly all my COM ports to be constantly in-use (an occasionnal bug noted in the ReadMe after installation ...
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227 views

Explorer.exe COMRuntime error: unexisting user can't get access permissions to COM server

since explorer has no appid, it's not possible to find relevant DCOM component in Component Services. I tried editing access rights in Elevated-Unelevated Explorer Factory component and editing ...
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Is there a way of knowing who the owner of an Explorer window is, and their groups/account rights?

Related question: Opening Explorer shell with admin privileges on XP (with IE7 installed) Once an Explorer window is opened, how can we tell the difference between one that is running as Admin and ...
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348 views

Check which com port my device uses?

I have a device hooked up to the USB connector and within it's software i have to choose which com port it uses. With Windows XP i would go to the device manager and go to com devices/ports where it ...
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2answers
1k views

Try to resolve logged error SQL Server/SQL Server 2008 R2

I have this logged error #10016 The application-specific permission settings do not grant Local Launch permission for the COM Server application with CLSID ...
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867 views

Is it possible to use a terminal emulator with the LPT port?

I am not very experienced with terminal emulators, but most of the emulators I have seen and used are asking to connect over a serial (COM) port. Is it possible to use a terminal emulator with the ...
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How can I get an overview of COM ports on a Windows computer?

How can I see both physical and virtual COM ports that have been installed and configured on a Windows computer? Can I see the settings and services they have been assigned to, or do I have to go the ...
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How to wire the LPT and COM port headers on a motherboard?

I would like to add an LPT and a COM port to my computer. The board has no LPT or COM port on the I/O panel on the back. However, there are LPT and COM port headers on the board. You can see these ...
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Redirect serial com to tcp port

I would like to know if exists some utility that connects to serial port and redirect input and output to a tcp port. I need this for a Java application, I need to write and read to a serial port but ...
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Virtual COM Port Using usbser.sys Keeps Dropping

I have a C# wpf application that is communicating with a device via a virtual com port over USB. This device is using the usbser.sys driver. Everything works normally as expected and communication is ...
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680 views

Why is my COM port list empty; how can I add COM ports for my modem?

Adding a new modem to my Windows 8: But I'm stuck at this screen:
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4answers
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How can you test communication on a COM/Serial port?

We have a OHAUAS defender 5000 series model T51P Weighting scales with a COM port. if we connect this to a PC we should be able to get the weight on the computer by sending a command to it. Is there ...
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2answers
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Escape sequences in virtual terminal

I need send next escape sequence through COM port. ^[[LD NOTE (from manual) Pressing "Ctrl-v", "Ctrl-[" on keyboard will generate the "^[" escape sequence. In some file systems, the escape ...
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386 views

Is there some setting in windows 7 that make USB Virtual COM ports work more fast?

I created a piece of software that send information to Virtual COM Ports, these Virtual COM Ports are used by a USB device, and I have got 2 computers: 1 Notebook and 1 Netbook, but this Notebook is ...
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743 views

Programmatically updated a cell's formula in one PC shows #Name in another PC

We have a lot of spreadsheets and there is a need to upgrade an important Addin. The change will involve converting an old formula to a new one. It is not a straightforward change because the name ...
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2k views

Install COM AddIn without adminstrative rights

I have a custome excel add in. I would like to install it on XP machine (to be added on Excel 2007). The problem I am having is that users don't have admin rights and also they have no permission to ...
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COM+ “Enable Partitions” Windows 7

Windows 7 Pro, 32-bit... when I go into Component Services and expand computers and right-click on My Computer and choose properties, the Options tab has a disabled Enable partitions option that I ...
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459 views

How do I use a USB printer as a COM port?

How do I make my USB printer simulate a COM port? I tried the solution here: How do I simulate a parallel (LPT) Printer with a USB Printer? … and I got this error message: "the network resource ...
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333 views

Is there software to write to RFID cards?

I have a specialty RFID writing hardware, I just want to write strings onto RFID cards. Unfortunately they didn't give me any software, but a library. I wasn't intending to program a new GUI and ...
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645 views

Configure connection to embedded device with virtual COM port in Windows 7

I want to set up a connection between my Windows 7 computer and an embedded device connected on a virtual COM port using a USB cable. I already have a driver for for COM port emulation. How do I ...
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770 views

Unable to register VB dll created in 32 bit in 64 bit Windows 7 Machine

Unable to register VB dll created in 32 bit in 64 bit Windows 7 Machine. getting the below error. and also not able to give reference to my dot net project Thanks, Pradeep
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What does COM object mean?

What is it? As I understood it's a kind of Microsoft special technology for some objects. But what exactly?
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Linux acting as USB device

I am working on an embedded Linux platform and I have need to transfer data between the platform and a PC. The embedded Linux has a usb device port (like a printer), so this is the means by which ...