Summary: Cannot connect MT5 to server? This guide solves 'No Connection' error with 4 practical steps: check internet, firewall, server selection, and restart sequence.
Step 1: Check Your Internet Connection
Open a web browser and visit any website (e.g., google.com). If no internet, restart your router or contact your ISP. Screenshot: browser showing successful website load.
Step 2: Verify Server Selection in MT5
Open MT5. Look at the bottom right corner. If it shows 'No Connection', click on that status bar. A window will appear. Make sure the correct server (provided by your broker) is selected. Screenshot: bottom right corner status bar highlighted.
Step 3: Allow MT5 Through Windows Firewall
Press Windows key, type 'Windows Defender Firewall', click 'Allow an app through Windows Firewall'. Find 'MetaTrader 5' in the list. Check both 'Private' and 'Public' boxes. If not listed, click 'Change settings' then 'Allow another app' and browse to MT5.exe. Screenshot: Firewall allowed apps window with MT5 checked.
Step 4: Restart MT5 and Router
Close MT5 completely. Unplug your router for 30 seconds, then plug it back. Wait for internet to restore. Open MT5 again. The connection should return. Screenshot: MT5 running with connection status showing green or signal bars.
Reference: MetaQuotes Help Desk - Connection Problems and Solutions.