WalletConnect Not Working? Common Problems and Fixes

Connection Initialization Failures

1. WalletConnect session fails to initiate due to mismatched chain IDs between dApp and wallet. The dApp must explicitly declare the target blockchain network ID in its connection request, otherwise wallets reject the handshake.

2. Missing or malformed URI parameters prevent proper deep-linking on mobile devices. Android intent filters and iOS universal link configurations must align precisely with WalletConnect’s required schema format.

3. Browser-based dApps encounter CORS restrictions when attempting to establish a WebSocket connection to the WalletConnect relay server. This blocks handshake completion unless proper proxy headers or relay endpoints are configured.

4. User agent detection logic incorrectly identifies desktop browsers as mobile, triggering unsupported QR code flow instead of direct pairing. This leads to blank modal displays with no actionable UI elements.

5. Relay server timeout thresholds are exceeded during high-latency network conditions. Default 15-second timeouts cause premature session abortion before wallet approval can be registered.

Session Persistence Breakdowns

1. Session storage is cleared unintentionally when users navigate away from the dApp tab or close the browser window. LocalStorage-based session recovery fails if the wallet does not persist pairing metadata across restarts.

2. Multiple concurrent sessions initiated from the same origin overwrite each other’s session state. This results in inconsistent signature requests where the wallet signs for an outdated transaction context.

3. WalletConnect v2.0’s topic-based encryption keys are regenerated upon app reload without preserving the original key derivation path. Subsequent message decryption fails silently.

4. Background tab throttling in Chromium-based browsers suspends WalletConnect event listeners, causing delayed or missed session approval notifications.

5. Mobile OS memory management kills background wallet processes before session acknowledgment completes, leaving dApp in indefinite pending state.

Signature and Transaction Handling Errors

1. EIP-1559 transaction parameters are omitted or misformatted in payload, leading wallets to fall back to legacy gas pricing and reject the request outright.

2. Transaction payloads exceed 1MB size limit imposed by WalletConnect relay infrastructure. Large contract deployments or batch operations trigger silent truncation.

3. Wallets enforce strict domain validation on dApp origin but do not expose rejection reason in error messages. Developers see generic “user rejected” despite valid signature request.

4. Multi-chain dApps fail to update active session namespace after chain switch. Wallet continues signing on previous chain, producing invalid signatures.

5. Custom RPC endpoints configured in dApp are not propagated to wallet during session establishment. Wallet uses default endpoints, causing mismatched block height and nonce errors.

Wallet-Side Compatibility Gaps

1. Older wallet versions lack support for WalletConnect v2.0’s symmetric encryption model, resulting in failed handshake attempts with no fallback to v1.0 protocol.

2. Hardware wallet integrations omit required attestation proofs during session proposal, violating WalletConnect’s security requirements for secure element-backed signers.

3. Wallets that implement custom UI flows override WalletConnect’s standardized modal behavior, breaking dApp’s expectation of consistent callback timing.

4. Wallet-specific encoding schemes for hex strings deviate from Ethereum’s canonical byte array serialization, causing checksum mismatches during address verification.

5. Wallets restrict session duration to 7 days without exposing this policy to dApp developers, leading to unexpected session expiration during long-running staking or governance interfaces.

Debugging and Diagnostic Tools

1. WalletConnect Explorer dashboard provides real-time relay logs but requires manual correlation with dApp client timestamps due to unsynchronized clocks across systems.

2. SDK debug mode emits verbose console output only when initialized with explicit enableLogging: true flag—default configuration suppresses all diagnostic traces.

3. Relay health status endpoint returns HTTP 200 even during partial service degradation, masking intermittent message delivery failures.

4. WalletConnect CLI tool validates URI structure but does not simulate actual mobile deep-link resolution, missing platform-specific parsing edge cases.

5. Browser extension injectors interfere with WalletConnect’s iframe communication layer, injecting duplicate event listeners that race against native SDK handlers.

Frequently Asked Questions

Q: Why does my dApp show “Connection timed out” even though the wallet scans the QR code successfully?A: This occurs when the relay server fails to forward the approval event from wallet to dApp within the configured timeout window—often due to network congestion or relay load imbalance.

Q: Can I reuse a WalletConnect session across different subdomains of the same root domain?A: No. Each subdomain is treated as a separate origin by browsers, requiring distinct session initialization and storage isolation.

Q: Why does WalletConnect fail when my dApp uses a Content-Security-Policy header?A: Strict CSP directives block dynamic script injection used by WalletConnect’s iframe-based communication layer unless 'unsafe-inline' or specific nonce values are permitted.

Q: How do I verify whether a wallet supports WalletConnect v2.0’s optional features like batch requests?A: Query the wallet’s capabilities via session.getNamespaces() and inspect the methods array for presence of eth_sendTransactionBatch.