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This question is similar to How to check Com ports in Windows 10 I have run the device manager in administrator mode, and "show hidden devices" is checked. "Ports (COM & LPT)" still doesn't appear.

device manager screenshot

Glorfindel
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Elizabeth Frank
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    Most laptops do not have LPT and COM ports so why do you expect to see them? – DavidPostill Sep 23 '18 at 20:31
  • I'm trying to install an old laser printer (QMS magicolor 3100) When installing and old printer by IP address it asks for a port (default is 1) the printer wants to be on port 35. My first attempt did not work so I removed the printer and was trying again. But even though I removed the printer, the install dialog said port 35 was already in use. I looked up ways to delete com port 35 so I could reuse it and found the instructions to go to the device manger and delete the port. Which I can't do because it com ports don't appear in the dialog as described. – Elizabeth Frank Sep 30 '18 at 18:37
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    @DavidPostill: because plugging in a USB serial link in Windows makes a COMxx port appear. – wallyk Mar 08 '19 at 18:57

1 Answers1

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Try this :

  1. Open Device Manager
  2. Click on Action
  3. Select Add legacy hardware
  4. Click Next
  5. Select Install the hardware that I manually select from a list (Advanced) and click Next
  6. Scroll down and then select Ports (COM & LPT), and click Next.
  7. Select Manufacturer as per your need (the standard one or default option should work), and then click Next
  8. Click Finish
  9. Reboot
harrymc
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  • Went to control panel, right click on Device Manger to run as administrator, click on Action - only available option is "help". Tried again after clicking "show hidden devices" in view menu, same result. – Elizabeth Frank Sep 30 '18 at 18:40