Question: I installed the TDST on my laptop, and when I am trying to create VSP, VSP is created but the applications running on the laptop does not recognize the COM Port. In Windows Device Manager, the Virtual COM port is shown with a yellow icon and an error “The Hardware for the installed software not found, Error code 41” What should I do?
Answer: This bug is caused by using Windows serial enumerator with our VSPD. Normally, registering VSPD with system serial enumerator is a good idea, because it allows Windows to detect and auto install serial devices attached to DS. This is necessary for some plug-and-play “Smart Serial Device” to work. But when working with the laptop which doesn't have any kind of serial port, registering VSPD with Windows serial enumerator can lead to error during the process of creating VSP. Therefore, if you are experiencing this kind of error, try to disable registration with system serial enumerator by commenting out that line in tvsp.inf.
First, you should remove the VSP that doesn't work, and then goto C:\WINDOWS\Inf\tvsp.inf
comment the following lines: [PortInstall.nt.hw.AddReg] HKR,,”UpperFilters”,0x00010000,”serenum”
change to (comment out the serenum registration) [PortInstall.nt.hw.AddReg] ; HKR,,”UpperFilters”,0x00010000,”serenum”
or simply downloading fixed tvsp.inf, and use it to overwrite the one in C:\WINDOWS\Inf\.
After modify the INF file, you should try to create new VSP, and the new VSP should not give you any more problem.
