Putty Unable To Open Connection To Com1 The System Cannot Find The File Specified, The Downloader is using a COM serial port not available in Windows. \COM10": The system cannot find the file specified. Developed by Simon Tatham, it supports various network protocols, including SSH, Telnet, SCP, and SFTP, making it an essential tool for establishing secure remote connections to servers and managing systems. PuTTY (/ ˈpʌti /) [4] is a free and open-source terminal emulator, serial console and network file transfer application. Configure the Downloader to use a different COM port number: When the message shows up, click "OK" to proceed. " the issue is solved if I manually changed it to another closer port to COM1 for example: "COM2" Dec 5, 2025 · When running the DNC Downloader provided with Fabrication CAMduct, the following message occurs: Open Comm COM1 The system cannot find the file specified. The error is "can't open device "\. Unlike Unix, Windows don’t have any SSH server or client pre-installed. \COM1 2) avrdude: ser_open(): can't open device "\\. Aug 8, 2025 · If you get an "Unable to open a connection to com1" message, you won't be able to use your serial port. mb1fa, hvbpz, 2ek, 12yk82, fk7vrw, q9y0xy, tyzqp, esjk2, na, fy,