Windows 10: Com Port Re-Assignment necessary?

Our PC is connected to two instruments via old fashioned COM Ports. So far they had been assigned COM Port 1 and 2. After our last Windows-Update Win 10 we foung to our astonishment that these instruments were no longer connected or available. Upon inspection we found device-manager two devices COM Ports with problems. These were the two serial ports on the SUNIX-PCI-card we had been using successfully for 8 years. "Properties" claimed a missing driver. Upon another Windows Update the latest drivers from SUNIX were installed again and after reassigning the com Ports to our instruments all is working again fortunately.


BUT somehow the COM Ports are now assigned as COM Port 5 and COM Port 6. There is another COM Port 1 I dont know what this is connected to and there are no other hidden COM Port, especially not 2 - 4. So my question is if there is any disadvantige if we leave the configuration as it is or if it is neccessarc to reassign it to COM Ports 1 and 2.


Thanks for any help.


Fred

:)

 

How to set AMP to use manually selected ports.

Hi Adrian,

Thank you for writing to Microsoft Community Forums.

The drivers create ports automatically and assign them to devices to communicate with the system. Some applications assign random ports every time you connect the device with your computer where as some of them use the fixed ports for devices, however
we can try assigning ports manually to the device. Kindly follow the steps given below.

• Connect the device with your Windows PC.
  
• Right click on Start (Windows logo) and choose
  Device manager.
  
• Expand Ports (COM & LPT).
  
• Disconnect the device and see which communication port disappears.
  
• Now, reconnect the device and make sure that the port re-appears under
  Ports (COM & LPT).
  
• Right click on the port (Communication port (COM N) and select
  Properties.
  
• Go to Port Settings tab.
  
• Click on Advanced.
  
• Click on the dropdown list next to COM Port Number and select the port you would like to assign to the device and click
  Ok.
  
• Close the Properties window by clicking Ok.
  
• Close Device Manager and see if it works.
  

I would also suggest to check if there is any option to choose a different port within the driver setup while installing it.

In case none of these methods works, I would suggest to get in touch with the device manufacturer and see if they have any updates/utilities to override this default behavior.

Hope it helps

Regards,

Peer Samie

Microsoft Community-Moderator

 

Assigning a usb port to a specific Com port

Hi Derrick,

You might need to configure your group policy on how to go about assigning a USB port to a specific COM port. It is best to ask this question in our
TechNet
Forums. The members there include IT professionals that can provide a more advanced recommendation on the next step to resolve your issue.

Regards.

 

Windows Updated(16299.309).KB4088776 Restart is required to complete.

Hi dalchina. Good news, I followed your suggestion and reinstalled the update and now it appears as "installed correctly" *Biggrin Maybe it was not necessary to run the Windows Update Troubleshooter or maybe if necessary. But using it I do not think it could have worsened something. The installation was very fast, unlike the first time it showed step 1 and step 2 completed.

Thanks for the suggestions and for the time to respond Best regards.


And thanks for the tip of that program, I'll have it on my list.