I am using Bitcoin Core Wallet .21 and have encrypted my wallet.
When I try to send some coins it asks for the passphrase, which it says is incorrect.
I have only ever used one of two passphrases and I have copied and pasted these each time using notepad (upper and lower cases), but it rejects my passphrase every time. There is nothing wrong with my passphrase, I know my passphrase is correct.
Are there any circumstances under which the wallet would behave like this?
I have used old backup files of my wallet, but get the same message.
Could my wallet be corrupt and if so can it be repaired anyway?