Are you currently , or are you trying to set up a specific service on port 8001 within your simulation? Authentication login to Cisco Packet Tracer cannot connect

In this scenario, we will explore the use of port 8001 in Cisco Packet Tracer. By default, Cisco Packet Tracer uses port 8000 for web-based access. However, what if you want to access the Packet Tracer web interface on a different port, such as 8001?

Cisco Packet Tracer is a network simulation and visualization tool widely used for learning networking concepts and practicing device configuration without physical hardware. It supports multiuser connectivity (collaboration between instances), instructor-student interactions, and simulated services that may listen on TCP/UDP ports. Understanding the ports Packet Tracer uses is important when running collaborative labs across networks, applying firewall rules, or diagnosing connectivity issues.

: Your local firewall or antivirus software may be preventing Packet Tracer from opening the port for the authentication handshake.

Local firewall settings or Windows Security may prevent Packet Tracer from "listening" on this port, breaking the link between the browser and the app.