unsuported protocol message keeps appearing on Windows xp. How to fix this? thanks
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To assist you better, we would highly appreciate if you would provide us with more details. Please specify the information provided on the error code. When the problem occurs? What browser are you using?
UgetFix research team has submitted a considerable number of browser-related errors that can occur due to the problems with protocols. One of the examples would be How to fix ERR_QUIC_PROTOCOL_ERROR on Google Chrome. The fixes provided there are not complicated, so you can try them to address your problem.