Flush DNS Cache (Windows)

Problem

Cannot Connect to Network Error on Windows machine. 

Cause

Likely a blocked IP range from an ISP

Note that the 'Cannot Connect to Network' message can be caused by a number of problems. See 'Cannot Connect to Network' message article for more information. 

Solution
Flush the DNS cache.

Flushing the DNS cache removes all the information stored in the cache and forces the computer to fetch new DNS information.

Open your “Windows Command” prompt.

1. Click “Start” and type the word “Command” in the Start search field. Finally, right-click the command prompt icon and select the option to “Run as Administrator”.
2. At the command prompt, type the command ipconfig /flushdns
3. You should receive a message of your success as confirmation when the cache is cleared.

This video explains how to flush the DNS cache on Windows

For those who are technically inclined, flushing the DNS cache gets a new random relay from the round-robin.

```relays.cardano-mainnet.iohk.io. 39 IN A 13.229.186.195
relays.cardano-mainnet.iohk.io. 39 IN A 52.199.179.146
relays.cardano-mainnet.iohk.io. 39 IN A 13.112.75.209
relays.cardano-mainnet.iohk.io. 39 IN A 13.250.124.239
relays.cardano-mainnet.iohk.io. 39 IN A 52.68.71.200
relays.cardano-mainnet.iohk.io. 39 IN A 13.112.180.247
relays.cardano-mainnet.iohk.io. 39 IN A 13.229.162.6
relays.cardano-mainnet.iohk.io. 39 IN A 13.230.166.230```

If one of those IP's was blocked but not another one, you'd experience the "Cannot Connect to Network" message.