Hello,
I was wondering if somebody could help me. I have btc core v0.18.1. The blockchain is fully synced. My wallet.dat file is a copy from many years ago. It seems like it has trouble loading and keeps getting stuck at the "rescanning" I tried the wallet something like 1.5 years ago and it was still fine. How long can this rescanning take? Any ideas? Im afraid it wont load and my wallet version is not compatible anymore with the core client I run.
Bitcoin Core wallets don't become "incompatible" with new wallet versions - newer versions automatically upgrade the file so that it is compatible with them. Subsequently, once a wallet is upgraded you can't open it in older version of Core.
Rescanning a wallet takes a few hours usually - longer if your hard disk is bad or old. But the private keys are still there so technically so is access to all your funds. It's just the transactions that it's loading.