I connected a hardware for serial port communication to my laptop. When trying to open the port, I got error: system.unauthorizedaccesse
xception: Access to port COM1 denied.
Then I rebooted the laptop maybe twice and the error went. This happened for two successive days. I know there is no logic to this that when laptop is rebooted the error goes. But atleast I could continue with my work. Today on third day, now even after rebooting for more than 5 times, I still get the same error. When I connect this hardware to my desktop, it works. Or if I connect any other device on laptop's serial port it works. Any reason why I get this error?
Attached is bitmap.