user128532: I have an old electrum wallet.dat that is password protected.
I know the password, but the seed is lost.
Can this be recovered?
When trying to open the wallet in electrum, there is an error


user13866: According to https://electrum.readthedocs.io/en/latest/faq.html

The default wallet file is called default_wallet, which is created when you first run the application and is located in the /wallets folder, inside the datadir.

So, as Claris commented, wallet.dat is a name used by Bitcoin-core and you can't expect Electrum to read a file created by different software for its own purposes.
See How can I transfer a Bitcoin-qt wallet to Electrum? but take care to understand the implications of importing private keys into a HD wallet which has a recovery phrase. There is a danger that any future recovery process will lose your money.

You could instead download bitcoin core, run it and stop it, then replace its wallet.dat with a copy of your old wallet.dat then rrestart bitcoin core to see if it loads that file.

128532: <p>I have an old electrum wallet.dat that is password protected.</p>
<p>I know the password, but the seed is lost.</p>
<p>Can this be recovered?</p>
<p>When trying to open the wallet in electrum, there is an error
<a href="https://i.stack.imgur.com/Stymh.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Stymh.png" alt="error message" /></a></p>
 13866: <p>According to <a href="https://electrum.readthedocs.io/en/latest/faq.html" rel="nofollow noreferrer">https://electrum.readthedocs.io/en/latest/faq.html</a></p>
<blockquote>
<p>The default wallet file is called default_wallet, which is created when you first run the application and is located in the /wallets folder, inside the datadir.</p>
</blockquote>
<p>So, as Claris commented, <code>wallet.dat</code> is a name used by Bitcoin-core and you can't expect Electrum to read a file created by different software for its own purposes.</p>
<p>See <a href="https://bitcoin.stackexchange.com/q/12763/13866">How can I transfer a Bitcoin-qt wallet to Electrum?</a> but take care to understand the implications of importing private keys into a HD wallet which has a recovery phrase. There is a danger that any future recovery process will lose your money.</p>
<hr />
<p>You could instead download bitcoin core, run it and stop it, then replace its wallet.dat with a copy of your old wallet.dat then rrestart bitcoin core to see if it loads that file.</p>
