Serial.available() value of Arudino is not greater than or equal to 0 when Write() is executed

[syumekino]

I use translation.

Win11 and Arduino UNO, VS code.
When I executed the process of sending a string from PC, Arduino's Serial.read() does not return any value. the return value of Serial.available is also never more than 0.
Read() was executable.
Is there a solution?

[cmaglie]

There is a problem in your code I suppose.

But if you don't provide the source code and the sketch you used, nobody can help you.