According to (this bug report)[http://sourceforge.net/p/com0com/discussion/440108/thread/13d56079/?limit=25] Is there Windows 8x64 support ? (SetupCopyOEMInf(C:\Program Files (x86)\com0com\com0com.inf) ERROR: 0xE000022F) http://thephuck.com/end-user-computing/how-to-disable-driver-signing-requirement-in-windows-8/ First you have to disable driver signature verification Run these commands from an elevated command prompt (Win + x is nice for this): bcdedit -set loadoptions DDISABLE_INTEGRITY_CHECKS bcdedit -set TESTSIGNING ON Reboot and you’re good. Take note there are two (2) D‘s in DDISABLE. Now install whatever you like. If you ever want to revers what you did, just run the opposite: bcdedit /deletevalue loadoptions bcdedit -set TESTSIGNING OFF I’ve read reports that you only need to turn TESTSIGNING ON and don’t need the DDISABLE_INTEGRITY_CHECKS, but I use option 1, because I don’t like the ‘Test Mode’ on the screen. http://www.linuxquestions.org/questions/linux-networking-3/serial-over-lan-from-linux-to-windows-825334/ linux: socat file:/dev/ttyS0,raw,echo=0 tcp-l:3006,fork& windows Socat for windows http://blog.gentilkiwi.com/downloads/socat-2.0.0-b5.zip socat file:/dev/com3,raw,echo=0 tcp-l:3006,fork& xp side: com0com pair com3 - com25 http://sourceforge.net/projects/com0...e.zip/download http://sourceforge.net/projects/com0...6.zip/download com2tcp --ignore-dsr \\.\COM25 192.168.50.66 3006