When a hardware wallet transaction fails after disabling blind signing, should you temporarily enable it to complete the transaction? The direct answer: In the vast majority of cases, no. The failure means the hardware wallet cannot parse what you are doing and cannot show you the details on its screen. Turning on blind signing at that moment is like telling your wallet, "Don't bother showing me what I'm signing—just approve it," which is exactly what an attacker hopes for.
Step 1: Confirm Whether Blind Signing Disabled Caused the Failure
There are many reasons a transaction may fail. Don't rush to enable blind signing—first check if it's actually the blocker.
What to do: Check the error message to see if it points to blind signing.
How to do it:
Open the companion app for your hardware wallet (e.g., Ledger Live) and the DApp or wallet you are using (like MetaMask). Repeat the failing action and watch the error prompt:
Case A (hardware wallet screen shows nothing; app shows an error like "Blind signing is disabled" or "Enable blind signing"): This means the transaction involves a smart contract call that the hardware wallet cannot decode, and its security policy blocked it.
Case B (hardware wallet screen shows a prompt, but you don't recognize or understand the content): It is displaying raw hexadecimal data or a hash, not human-readable transaction details. This still counts as blind signing, just without an explicit error message.
Case C (error is a connection drop, app freeze, etc.): Common bugs with MetaMask mobile and Ledger, such as the hardware wallet disconnecting or the ETH app not being open. These are unrelated to blind signing settings.
Completion criteria: You can clearly confirm that the transaction was rejected because blind signing was disabled on your hardware wallet.
Step 2: Decide If the Transaction Is Worth the Risk of Blind Signing
If you are in Case A, you face a choice: enable blind signing or abandon the transaction.
How to decide: Ask yourself these questions. If you answer "no" to any of them, do not enable blind signing:
Are you sure the DApp domain is the official one? Not a phishing site, not a link from a search engine ad.
Are you sure the contract address is the officially published one? You have verified the contract address on the project's official website or official X (Twitter) account.
Can you accept the premise: "I sign without understanding or confirming the details, and I take full responsibility"? This is the default state of blind signing. The Ledger documentation clearly states: blind signing allows you to sign transactions the hardware wallet cannot fully verify. It is off by default and only recommended for advanced users who understand the risks.
Completion criteria: You can honestly answer "yes" to all three questions. If you are unsure about any, do not turn it on.
Common failure scenario: Many people think "my ENS transaction failed the first time, so I'll enable blind signing and it will work." Indeed, ENS smart contract interactions require blind signing because Ledger blocks contract interactions by default. Since ENS is a well-known protocol and you have verified the domain and contract, enabling blind signing once to complete the action is within an acceptable risk range. On the other hand, if a page claims to be an "airdrop claim" from a project that was launched three days ago, the contract is not open-source, and you arrived through a community link, enabling blind signing would be gambling.
High risk: During blind signing, your hardware wallet screen may show only a hash string instead of key details like "who receives the funds, how much, and what permissions are granted." A man-in-the-middle (MITM) attack can alter what the software shows, but if the hardware screen shows no readable data, you cannot spot the difference. In past attacks on the Safe multi-sig wallet, Ledger blind signing was a critical link in the exploit chain.
Step 3: If You Decide to Enable It, Follow These Steps and Disable It Immediately After
What to do: Temporarily enable blind signing, complete the transaction, and then turn it off right away.
How to do it:
Enable blind signing on Ledger (using the Ethereum app as an example):
Open the Ethereum (ETH) app on your Ledger device.
Press the right button to go to Settings.
Find the Blind signing option.
Press both buttons to confirm and switch it to Enabled.
Retry the transaction in your wallet: Go back to the DApp or wallet and trigger the previously failed action. This time the hardware device will show a confirmation prompt (even though you cannot read the details). Confirm to proceed.
Immediately turn off blind signing after the transaction completes: Follow the same path and switch Blind signing back to Disabled.
High risk: After a Ledger firmware update, the blind signing setting resets to its default "Disabled" state. If you previously enabled it and later find a transaction fails again, first check if the blind signing toggle has been reset, rather than assuming another bug.
How to verify the operation: Once the transaction is on-chain, check the details on a block explorer (Etherscan/BscScan). Confirm the result matches your expectation—the amount sent, receiving address, and contract interaction outcome. If you notice anything unusual during this check, immediately go to Revoke.cash to inspect and revoke any token approvals for that contract, cutting off further risk.
