How to enable COM ports on Windows 11 - Microsoft Q&A
Nov 15, 2025 · To enable COM ports on Windows 11, you typically need to ensure that the appropriate drivers are installed and that the COM ports are configured correctly in the system …
Service overview and network port requirements for Windows
Jan 15, 2025 · This article discusses the required network ports, protocols, and services that are used by Microsoft client and server operating systems, server-based programs, and their …
Windows 11 reports virtual COM ports are in use when they aren't.
Feb 29, 2024 · COM port is not in use. Cable uses a CH340 chipset, which both versions of Windows seem to recognize without a problem. Does Windows 11 handle COM ports …
No COM ports in Windows 11? - Microsoft Q&A
Jul 17, 2022 · Windows 11 New laptop, I have applications that require com ports 3 and 4 to connect to hardware via USB port. There doesn't seem to be any COM ports and no way to …
Configure alternative SMB ports for Windows Server 2025
Nov 1, 2024 · You can use the SMB client to connect to alternative TCP, QUIC, and RDMA ports. However, you can only connect to alternative ports if the SMB server is configured to support …
How to list open ports and application using them in Windows?
Jan 12, 2016 · I have trouble identifying the application using port 25 on my Windows 10 system. Any useful hints to list used ports and using applications without 3rd-party applications?
Com Port Address Settings Windows 11 - Microsoft Q&A
May 27, 2022 · I do not have an advanced tab on the properties window to change com port address in Windows 11. How do I change COM port address or enable the advanced tab in …
In Windows 11 only one Ports (COM & LPT) shows
Jan 23, 2025 · Hi Welcome to Microsoft community.Based on your description and the search results, the disappearance of COM ports in Windows 11 Device Manager is a known issue, …
Using the PortQry command-line tool - Windows Server
Nov 12, 2025 · PortQry is a command-line tool that you can use to help troubleshoot TCP/IP connectivity issues. This tool reports the status of target TCP and User Datagram Protocol …
Unable to find USB Serial Port (Ports COM & LPT) in Device …
Jul 15, 2023 · Check for system updates: Make sure your Windows 11 system is up to date, there may be some updates that fix device management issues. Check BIOS Settings: In rare …