This guide helps you connect to the correct network when using the FHEVM examples.
Problem: "Wrong Network Detected" Error
If you see this red warning banner in the app:
Wrong Network Error
This means MetaMask is connected to the wrong network (e.g., Ethereum Mainnet instead of Sepolia).
Solution: Reconnect with Correct Network
Step 1: Disconnect Wallet
Click the "Disconnect Wallet" button in the app (either in the wallet info section or in the warning banner).
Step 2: Connect and Select Only Sepolia
Click "Connect Wallet" again. In the MetaMask connection popup, go to permisisons tab and select edit networks
Select Network
Select only Sepolia test network from the list of available networks.
Step 3: Success!
You should now see the app connected successfully without any warning. The FHEVM initialization will proceed and you can use the encrypted counter demo.
Successfully Connected
Why Does This Happen?
The FHEVM examples are configured to work on Sepolia Testnet only. When MetaMask connects on a different network (like Mainnet, Polygon, etc.), the app detects the mismatch and shows a warning to protect you from sending transactions to the wrong network.
Still Having Issues?
Make sure you have Sepolia ETH in your wallet (Get test ETH)
Check that MetaMask is the only wallet extension enabled
