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Problem: I see the error message ‘transaction expired’ and my Solana transaction won’t submit.
Cause: Too much time passed between the transaction being created and you signing it. The blockhash got too old in the meantime, and the transaction expired.
Solution: Try submitting the transaction again. If you’re using a hardware wallet to manage your Solana account, remember that you need to interact with the device (i.e. press buttons) to sign the transaction, so be ready to do this when prompted: you have about 60-90 seconds to review and approve once the transaction has been created.
