(USB Link script issue) "Rar$DIa0.(275) " error

I am trying to connect my arduino internet via usb to blynk app but whenever I run blynk.ser-bat it can’t connect

Can you be more clear ?

We need much more information…

What type of computer, how are you accessing the USB script (directly vi the folders or in the Arduino IDE) do you have anything else using the same COM port, etc…

Have you searched this forum for other USB-link / USB script topics… there are a few.

Also your title error (apparently some form of WinRAR error?) makes no sense for your issue… how, where and when does this error appear?