Recently, a Lenovo program on my T400, tvt_fingerprint_info64.exe, has been started trying to access localhost:5550, and has been causing my antivirus/firewall to intercept this. Why is this happening? This only began a month or so ago, and nothing has changed, to my knowledge, on the machine, which is about two years old.
The message indicates that the application is trying to communicate with your computer's local system.
It is recommended that another antivirus or firewall software that doesn't try to block the inter-process communication is installed. This will not pose a security risk.