Metamask: Withdrawn smartcontract didn’t transfer ETH to Metamask account

Metamask: Extract problem with SmartContract -cancellations

I write this article to tackle a common problem with which many users at Metamask, a popular extension for metamask in web browsers, are faced. The problem is not unique for the Ethereum blockchain, and I will explain why it occurs.

The problem:

If you provide an intelligent contract on Remix (a web-based platform) and exceed it from your Metamask account, you essentially transmit Ethher (Eth) in the credit of the contract. However, if you try to withdraw these means, the problem arises that the withdrawal does not seem to be successful.

The solution:

The cause of this problem is due to how intelligent contracts are structured and interact with metamask. In particular, it has something to do with the way Ether is transferred between the accounts.

When a user provides a contract for Remix, he usually creates a new contract account in his Metamask letter bag. This contract account serves as an intermediary for the preservation of ether from external sources (such as your metamask letter bag). If you withdraw funds from this contract, you mainly transfer the ether in the credit of the contract.

However, some contracts have integrated a “re -entry” mechanism with which they can return an incoming ether before it can be withdrawn. This means that the contract also applies to its logic again to prevent the contract from preventing this that this primarily happens!

Is your ETH lost forever?

Here things get a little more complicated. If your intelligent contract has a re -contractual mechanism, it is possible that the funds have never actually been transferred from their Metamask account. In other words, they essentially lose their ether forever.

There are a few steps to take here:

• Check your Metamask letter pocket amount : Check your Metamask account stand and make sure that you reflect the amount of the ether you have intended to withdraw.

• Check the contractual updates : If the smart contract has been updated with a re -catching mechanism, the problem can be solved. Look for recent changes in the code or the documentation of the contract to determine if you are concerned with this problem.

• Contact Metamask Support : Contact the Customer Support team from Metamask and give you your entire transaction history (including your Smart Contract provision) and your withdrawals.

• Try another wallet : If you use Remix, try the same contract from a new Metamask account to determine whether the problem is specific to your existing account.

Prevent future problems

To avoid this problem in the future:

• ** Make sure that your intelligent contract does not contain any recovery mechanisms

• Use another wallet for withdrawals : Use a separate metamask account for withdrawals to prevent problems with your main account.

Diploma

While this problem is not just for metamasking, it is important to understand how intelligent contracts interact with accounts and wall pockets. By checking the structure of the contract and the measurement of steps to prevent re -catching mechanisms, you can minimize the risk of losing money forever.

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