Wallet Password

[Plasterman]

Hi everyone, I've been having a few problems with bitcoin core so i will start at the beginning and hope i can get help here, thanks.
It started a few weeks back, i ran bitcoin core through windows on to an external drive. the drive was playing up and taken ages so upgraded the pc and download direct to C drive . I had, have most things backed up including a few wallet.dat files. After i download the newest version of bitcore and synced the blocks i copied over the wallet.dat but the wallet would not sync. If i remembered right i went to the command line and asked it to sync the wallet and it did, A few weeks later i tried to open the wallet by clicking file Open wallet and an error message popped up (Berkelybatch Can't open database wallet.dat( dupllicates fileid ef95020000001700099f6ad130000000000000000 from wallet.dat) So after that i opened on bitcore settings change passphrase, i entered my old password, and replaced it with a new one i copied and pasted, restarted bitcoin core and now it will not accept my password, i am 100% sure it is the correct password, I have the old wall.dat files from 5yrs ago and the new ones backed up, i was looking for any input before i try to do anything,  can i upload the old wallet .dat file and enter the old passphrase or is that a no no? any help appreciated and thanks in advance for taking the time to read it.

[LoyceV]

First: make another backup of ALL different wallets you have. Use a new USB-stick or something, then store it safely before continuing.

I don't know what you mean by "upload", but you should be able to just replace your current wallet.dat with an older version. Depending on past password changes and keyspace you may or may not find back your coins. Just try it.

[Plasterman]

Sorry i meant copy the dat file across like you say, was just wondering if i would be able to decrypt that wallet using the old password. i have only ever changed it once, and that was last week and now it does't work, like i said am 100% sure it's the right password. I will try in a bit , thanks just now.

[LoyceV]

Another thought: do you still have the original wallet.dat on the external drive? If not, you might be able to use recovery software to find it back (before you changed the password).

[NotATether]

Are you sure that when you pasted the new password, you didn't accidentally paste stale contents from the clipboard? Sometimes I run into situations on Windows where my clipboard still contained the old contents when I thought I copied it.

There is a Windows utility hat let's you view the clipboard history, hopefully you didn't log out yet: https://www.nirsoft.net/utils/clipboardic.html

[ewaspiro]

Hi everyone, I've been having a few problems with bitcoin core so i will start at the beginning and hope i can get help here, thanks.
It started a few weeks back, i ran bitcoin core through windows on to an external drive. the drive was playing up and taken ages so upgraded the pc and download direct to C drive . I had, have most things backed up including a few wallet.dat files. After i download the newest version of bitcore and synced the blocks i copied over the wallet.dat but the wallet would not sync. If i remembered right i went to the command line and asked it to sync the wallet and it did, A few weeks later i tried to open the wallet by clicking file Open wallet and an error message popped up (Berkelybatch Can't open database wallet.dat( dupllicates fileid ef95020000001700099f6ad130000000000000000 from wallet.dat) So after that i opened on bitcore settings change passphrase, i entered my old password, and replaced it with a new one i copied and pasted, restarted bitcoin core and now it will not accept my password, i am 100% sure it is the correct password, I have the old wall.dat files from 5yrs ago and the new ones backed up, i was looking for any input before i try to do anything,  can i upload the old wallet .dat file and enter the old passphrase or is that a no no? any help appreciated and thanks in advance for taking the time to read it.

if you bought the wallet its fake. Have 4 wallets with fake passwords (i.e. forged with no keys)

[Plasterman]

Yes i have the old install on the external HD, also the walet.dat file is in there, i have a copy of the old wallet.dat file on 3 USB pens as well all encrypted. also the password before i changed it for it.. NotTethered I cannot guarantee that i didn't copy anything else along with that password, i know what your saying but i can't see it, but also not 100% on that . Ewaspiro i havn't got a clue where you got or think i bought a fake wallet as i can assure you it is not. I mined on this site for years. I just wanted to ask some questions before i make a move incase i make the situation worse, if it can get any worse, if i sync the old dat file back, would i be able to open it with the old password.

[BitMaxz]

Yes i have the old install on the external HD, also the walet.dat file is in there, i have a copy of the old wallet.dat file on 3 USB pens as well all encrypted.

If you still have an old backup copy just make a new copy(for safety) and make sure not to touch the original only use the wallet .dat copy and move it to your Bitcoin core wallet folder.

After that, you can reopen the Bitcoin core and change the password but before you change the password try to input the password into notepad first to check if the password is correct then copy and paste it to the Bitcoin core.

Be sure to remember the password because I had previous experience that I thought I had my password in mind but I forgot I added a few characters from my password.
So maybe you forgot that you added some characters at the end in your password?

[Plasterman]

Hi guys , just an update i did replace the wallet from one from 2015 and it did not work with the old password  .
 So after getting all worked up i tried the password again the new encrptyed one and it worked, so to be honest i was scratching my head for a bit , so after i copied and pasted the new password i have now made a back up of the wallet and my password, so all good. Ohh and for the record an old wallet with the old password doesn't work. so you can't fall back to that if you make a new password, thanks again for all who took the time out to help me, hope you all stay safe.
Thanks.

[HCP]

Ohh and for the record an old wallet with the old password doesn't work. so you can't fall back to that if you make a new password, thanks again for all who took the time out to help me, hope you all stay safe.

That isn't correct... You can absolutely fall back to an old copy with the old password.

If you have a wallet.dat that is using "password1" and you then make a copy of that wallet.dat and change the password of the copy to "password2", then the original version of the wallet.dat will still be using "password1".

Nothing you do to a copy (in terms of passwords) will affect the original file. How can it? If the original is not being modified, then the password cannot possibly have changed. It makes no sense.

I suspect you've gotten confused with all the "copies" and have actually been attempting to open the old file with the new password (or vice versa). In any case, I'm glad you've managed to get it sorted and have a functioning backup