I just did an update restart on my PC, I'm trying to open my electrum wallet, which is on my desktop. I get an error message: "Cannot read wallet file 'C:\Users....\Electrum\wallets\default_wallet". Has anyone encountered this & what should I do to be able to open my electrum btc wallet again?
From how I understand it, your wallet-file is corrupt.
Try to rename it or even delete it and restore your wallet from seed.