A is the protocol's emergency eject button. When a device sends an RST packet, it is essentially screaming, "Stop talking immediately. This connection is invalid, and I am tearing it down right now."
Usually paired with a TCP/IP reset is netsh winsock reset . Winsock maintains a "catalog" of installed service providers (LSPs - Layered Service Providers). In the past, many applications (adware, legitimate VPNs, proxy tools) would inject themselves into this catalog to filter traffic. If an application is uninstalled improperly, it leaves "holes" in the catalog chain. This results in the dreaded "The requested service provider could not be loaded or initialized" error. Resetting the stack flushes this catalog back to the default Microsoft providers, removing the broken links. tcpip reset
If you are ready to perform this operation, here is the "correct" order of operations to ensure a total cleanse. You must run Command Prompt as Administrator: A is the protocol's emergency eject button
This article demystifies the TCP reset: what it is, why it happens (from malicious attacks to harmless glitches), and how to diagnose and repair a corrupted local TCP/IP stack. Winsock maintains a "catalog" of installed service providers