How to delete unconfirmed transactions on electrum?

[molotov477]

How to delete unconfirmed transactions on electrum?

The method I use for re-spending is a few simple edits in the wallet file.

1. Backup wallet file. Always have your seed words written down but it's quicker to restore a backup wallet file.
2. Close Electrum. Find and open the wallet file.
3. Look for the last tx in the verified_tx3 section. Note it's first few digits so you can recognize it.
4. Now look in the transactions, txi and txo sections and remove the records that follow this noted one being careful to get the trailing comma on the previous one so the JSON syntax isn't broken. That should clean up the unconfirmed tx.
5. Save the file and disconnect network so it cannot sync to update again.
6. Open Electrum and check the unconfirmed tx is not shown.
7. Create the tx you want again with higher fee and save to disk.
8. Optional: Sign offline (or online) and save to disk.
9. Reconnect network and load the tx from file. It will let you send but probably gets a spent outputs error.
10. To send using a pushtx page: You can open the saved tx file and select the hex raw tx digits (without quotes) for pasting into a push site. All the sites I've tried have also given spent outputs error. The old tx needs to be dropped from the mempool on the pushtx site and at least some miners for it to get confirmed.

Once you reconnect the sync will update with the unconfirmed tx again but if you do manage a successful re-spend then eventually it will drop the invalid old one and show the new one confirmed.

Hope that helps.