Windows 10: Stop Windows telephony from reserving serial ports

Hi, I have encountered an issue in which Windows Telephony service keeps using my serial ports most often COM1 From what I understand the issue happens because com1 is "real" serial port integrated onto motherboard and Windows thinks there is a dialup modem plugged into it and in the process, reserves the port so whenever I try to connect with the actual device, I get an access denied message.Anyway, the issue can be solved by stopping telephony, connecting to the port, then restarting telephony in services.msc, but this is kind of a pain when I am in a hurry. Is there any way to have it s

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Changing the Port settings for Serial-USB.

Hi,



Thank you for writing to Microsoft Community Forums.

If you want to change the port settings, please follow the steps mentioned below:

1. Open Device manager (right click on start button
   and then on Device manager).
   
2. Then expand port (COMS & LPT).
   
3. Then right click on Prolific USB-to Serial Comm Port and then on properties.
   
4. Go to port settings and click on Advanced.
   
5. You will be able to make the changes on this screen.
   

Hope this helps.

 

Hyper-V serial port

Hi

We have

Hyper-V Manager version: 10.0.18362.1

installed on Windows 10. We need to use serial port on victual machine, but could not get correct configuration. We tried some suggestions from internet, such as remote logon the virtual machine and use the serial port on host computer. It does not work neither.
What is the best way to get serial port on Hyper-V virtual machine?

 

Windows 10 serial on OEM


So I'll summarize steps made...

1. Saved serial number (taken with Belarc Advisory) from preinstalled (half chinese language) Windows 8.1 (don't know exactly the version, suspect Windows 8.1 with bing) on tablet
2. Formatted tablet
3. Tried to make a clean Windows 10 (HOME, HOME N and also PRO, everytime with the same result) install with ISO taken with MediaCreationTool, during install (and also after completing installation) it says that the saved serial is not valid
4. Tried to reinstall Windows 8.1 (ISO taken with MediaCreationTool again) HOME, it says that the serial is not valid

So i suspect that the saved serial, is from a WINDOWS 8.1 WITH BING OEM version and this kind of ISO is not accessible/downloadable anywhere (at least I can't find it, any suggestion?)

Still not tried SHOWKEY with that serial, I am in office now, and the serial is saved on a usb pen at home, will try this evening.

So I'm stucked but if everything is like I suspect, it's incredible. If I have a tablet/notebook/netbook with Windows 8 preinstalled, it seems that I can update to Windows 10 without problems, but if I want to make a clean Windows 10 install that serial is not valid...