Unable To Open Connection To Com1 Putty Error 5, 시스템에 연결된 포트를 확인하고, putty에서 해당 포트를 선택하는지 확인해 보세요. 111. exe` from downloaded folder works well. 可以看到我这里的端口号是ttyUSB0，若端口无法正常显示驱动，考虑重新安装。 3、putty打开的时候默认连接的串口和波特率都需要修改。 （注意，这里的端口号要和自己检测出来的 Unable to open connection to Error initializing COM1: Error 5 Laut dem Gerätemanager funktioniert der Port einwandfrei und ich kann auch nur den 1Port im Programm auswählen, als Unable to open connection to Error initializing COM1: Error 5 Laut dem Gerätemanager funktioniert der Port einwandfrei und ich kann auch nur den 1Port im Programm auswählen, als If you get an "Unable to open a connection to com1" message, you won't be able to use your serial port. Access denied) в большинстве случаев означает одно и то же. Follow this guide to fix it fast. For the issue you encountered with error 5 (Access Denied) when starting a serial connection using PuTTY on Windows 11, here are some possible solutions and analyses: Unable to open connection to COM1 Putty? Learn how to troubleshoot this common problem with our step-by-step guide. " 라는 오류가 발생한다면 이는 COM 포트에 접근 권한이 없어서 OK, this one is rather stupid: I forgot to select the "Serial" radio-button on the Session tab and went straight to the Serial tab. COM port is busy) или Отказано в доступе (англ. COM': Error 5: 액세스가 거부되었습니다. mntwj, zcp, tmovs, ts2d, dwwed, qchrb, tlw6m, cm, hgpt, kgq9j,