hi

[AirLiu]

hi
 

[1715031378]

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[1715031378]

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[1715031378]

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[1715031378]

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[BitMaxz]

I  think you do something wrong that is why your private keys  is not valid i just do some test from wizard you need to choose import bitcoin address or private keys don't choose standard wallet it won't work i already experience this that i thought private keys is not valid private keys in latest electrum..
To be clear i made a screen shot.


Not this one if you import your private key there it won't work..

[BitMaxz]

to be more clear...
I have installed PC electrum BTC wallet and write down several addresses with their private keys and used one of these addresse...
When I installed new version of electrum, the private key for my electrum BTC address has change to invalid one...
When I import my old private key - it show different BTC address with this private key...

So you mean after you restore your private keys the bitcoin addresses is different?
Is it a segwit address? just like the same as mine bc1qm37rylgq8rkwdnx66etk9j7dldxksdq8dqrngk
The address you've got is starting from bc1? Its a segwit address its not invalid address.

[BitMaxz]

to be more clear...
I have installed PC electrum BTC wallet and write down several addresses with their private keys and used one of these addresse...
When I installed new version of electrum, the private key for my electrum BTC address has change to invalid one...
When I import my old private key - it show different BTC address with this private key...

So you mean after you restore your private keys the bitcoin addresses is different?
Is it a segwit address? just like the same as mine bc1qm37rylgq8rkwdnx66etk9j7dldxksdq8dqrngk
The address you've got is starting from bc1? Its a segwit address its not invalid address.

no the address like this 36dnyKWHPKEXqrh9Po4ospqQuk84hhk***

This is a  multisignature address/2fa wallet as of now i don't know how to get the private keys of your real multisig address
multisignature address begin with 3 unlike a normal bitcoin address starting from 1 single private key addresses.

The only way that i think you can restore your wallet is to use seed mnemonic if you save your seeds you can recover it..

Check this thread  it is the same problem as yours..
https://bitcointalk.org/index.php?topic=1572917.msg15812080#msg15812080
And read this post.
https://bitcointalk.org/index.php?topic=1777618.msg17733381#msg17733381

[HCP]

What does the "title" of the Electrum Window say? something like "Electrum 3.0.1 - default_wallet [2fa]" or "Electrum 3.0.1 - default_wallet [2of2]" ?

I'm interested to know what the bits between the [ ]'s are?

It seems you have a MultiSig wallet of some description (either normal MultiSig or perhaps 2FA). Unfortunately, you cannot recreate a MultiSig wallet from only one private key... it needs all the keys that were originally used to create the wallet.

Also, with Electrum you should not need to save private keys... you should only be using "seeds" to restore wallets... that is the whole point of having seeds!