ERR_SSL_PROTOCOL_ERROR_

ERR_SSL_PROTOCOL_ERROR

Windows 10/11 · Network/DNS

Windows 10/11 just hit error ERR_SSL_PROTOCOL_ERROR, which corresponds to a fault called "ERR_SSL_PROTOCOL_ERROR". This is one of the most searched error codes for this OS — you're not alone, and there's a clear fix.

What Actually Happened

Network stack error: the TLS/SSL handshake with the server failed, often from a clock mismatch or broken certificate chain.

Symptoms

Network error: 'ERR_SSL_PROTOCOL_ERROR'

Common Causes

Connectivity condition: the TLS/SSL handshake with the server failed, often from a clock mismatch or broken certificate chain

How to Fix It

01
Flush DNS cache:
ipconfig /flushdns
02
Reset Winsock stack: netsh winsock reset
03
Reset IP stack: netsh int ip reset

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