Quote from: Adriano2010 on December 12, 2018, 11:54:51 PM

Hi. One of my friends found on a usb stick a wallet.dat backup and i go today to see if has some bitcoin on it and i tried electrum but not working and after bitcoin core, but after i put wallet.dat on bitcoin core at first open get this error

https://i.postimg.cc/PrhmBXkh/salvagee.png

And after a .bak file was created, and now when open bitcoin core appears this
https://i.postimg.cc/QMB5pVcg/Untitled.png

Is there any chance to see bitcoin addresses of wallet or does it need to full sync?

On receiving address tab all is empty.

If you or your friend is poking around a "found" usb with btc data...on a computer that you use regularly and/or with your personal wallet on it, there's a really good chance that you'll soon be back here posting about how your wallet was hacked.
If I was you and had a wallet on a computer that you plugged that usb into, I'd move the funds to a different wallet on a different computer of phone, STAT.

You dont mention it, so I assume you didnt do this: anytime you find a USB and want to see whats on it, you should use a "live CD" boot on your computer.