Incorrect or no genesis block found. Wrong datadir for Network?

[user7771]

I downloaded the Bitcoin QT, when I try to open it I always get this error msg: Incorrect or no genesis block found. Wrong datadir for Network?

I already deleted the Bitcoin folder in Roaming but I still have the same issue, the strange thing that the Bitcoin Testnet wallet is opening

[user7771]

I did a reindex with this guide: https://coinguides.org/rescan-reindex-wallet/

Now its opening

[HCP]

Is it still opening the Testnet wallet? It sounds like you were possibly using the wrong "shortcut" to start Bitcoin Core... The installer will create two:



And because Windows 10 is a bit stupid sometimes (all the time?)... it can sometimes select the TestNet version as the "best match" if you click "start" and start typing "Bitcoin"