Null-modem emulator(com0com) with Windows 11

I tried to install the Tool “com0com” to get virtual COM ports in Windows 11. However, even I tried the version 3.0 with digitally signed drivers, Windows 11 told be that there are issues with the digital signature (Error Code 52) and the created virtual COM ports did not work.

To solve the problem I downloaded an older version from here and followed the instructions on that web site.

• Extract the ZIP file
• Open an administrative command window and change to the extracted directory
• Run “setupc”
• Now create the desired COM port pairs with the command
  “install PortName=COM14 Portname=COM15”
  to create a COM port pair named COM14/COM15
• The COM ports will not appear under the normal COM port section in device manager but under he section “com0com – serial port emulators”

So even with these old drivers you will be able to use virtual COM ports with Windows 11.