how to change a com port number?

Question

Hello everyone, I’m going to try to be explanatory, here’s the thing: I have an issue with my USB to RS232 cable. I’m using this cable connected to my PC as well as to the satellite demodulator to update its firmware. In fact, my flashing software does not recognize the COM port since it goes from COM port 1 to COM port 4, and apparently my cable is sending on COM port 6 (according to tests with other software). How can I change the port number in Windows XP so that it can finally communicate with my flashing software on the chosen port???
Thank you in advance!!!

MaGrandMereChinoise · Accepted Answer

Good evening,

There is an order but I can no longer get the neuron back on it.

However, you can do it by teasing the mouse.
- right-click on "My Computer" then "Properties"
- tab "Hardware" then button "Device Manager"
- scroll down to Ports (COM and LPT) and expand the line by clicking on the "+"
- right-click then "Properties" on the COM port that interests you
- tab "Settings" then button "Advanced"
- there you can change the port number

Of course, if you plan to use an existing port, you will first need to rename it before assigning the new one..

--
A candle does not lose any of its light by sharing it with another candle.

Invité · Answer

Comment trouver le poste de travail sous Windows Vista ? :(

Mr2600 · Answer

Hello, his name is computer since it is very unlikely to see someone working on Vista HAHAHAHAHAHA

KennY · Answer

Thank you very much MyChineseGrandmother It works very well!

angellyead · Answer

I have a problem, in XP the settings tab is not present, so I can't change the port number!

Romain42météo · Answer

Hi

I’m on XP. Everything is fine until the “settings” tab, but when I click on “advanced,” my PC says I need permission to modify the registry (message: You must have write permissions in the Registry for this device to modify its advanced settings). Yet I am an administrator. So what should I do?

Karimos · Answer

You just need to delete this command line from the registry:
"HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Control/COM Name Arbiter"
in my case I'm on Windows 7 and it works, I found COM 3 instead of COM 12, 13, etc.
source: http://niasdigital.com/blag/?cat=1

zizoumath · Answer

Thank you first of all for your response, but it worked only once and there is a question mark on this COM port and it doesn't work.

TheAkamFR · Answer

Once in Vista on the device manager, I can't find the COM Port or LTP tab.

Lidgeux · Answer

Thank you lolo- [May 23, 2012 at 08:52] It works COM1 under Win7 which was displaying an intermittent COM4.

How to change a com port number?

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