Bitcoin transaction fails from my old wallet.

[VelvetEcho]

I am not able to move Bitcoin from my old Bitcoin.org wallet (version 0.12.0) to the new wallet (version 26.0). Every time I am doing the transaction, it fails. Is there any compatibility problem? What should I do now?

[Kaile]

Version 0.12.0 is a very outdated version and incompatible with new Bitcoin networks. Direct transfer is risky.

I would suggest trying to export your private keys from your old wallet and then importing them into your new wallet.