Hello there, this question has been asked before here. This is the best solution that was found:
When connecting to a website, if Google Chrome browser fails to fetch the website to the browser, it throws an error saying "This site can't be reached Error" – ERR_CONNECTION_TIMED_OUT. It means the server is taking too much time replying. The main reason behind this error is your computer can’t access the internet connection or maybe something is blocking your network to establishing a connection. Apart from the Network issue, there can be multiple reasons why this error shows up. Before going to any solutions, please make sure the server you want to open exists. If the server exists, there are numerous solutions which can be used to solve this error.
- Clear your Chrome browsing data
- Check your Network Cables, Restart your Router and Reconnect
- Check your Windows Host File
- Remove Proxy
- Flush DNS and reset TCP/IP
- Run Chrome Cleanup Tool