I need your help,
Which has already seen in Windows wallet: generated but not accepted mined?
this mention appear in my wallet
There are times when stakes are not accepted. It is also known as an “orphan”. It was generated but not accepted.
It is just a normal occurrence in staking/minting.
This happens because several wallets are competing for the same block.
And so to have the best chance of succeeding in staking you should have a reliable network connection.
Just keep your wallet open 24/7 because it will retry or re-stake automatically, and will be confirmed/accepted by the network.