I just realized that I have more zcash in my zcash4win wallet than I suspected. It’s only 0.11ZEC, but I don’t know where they come from. I have never generated another address that I know of. Looking at the overview tab, the transaction isn’t listed either.
When I try to send the amount from this “unknown” address to my main address, I get an error saying “An unexpected error occured when sending cash! Please ensure that the ZCash daemon is running and parameters are correct…”
I don’t know if this error is related to the weird address or a separate issue. I have done another backup of the wallet and private keys now, in case I need to reinstall. Now, the only thing I could think of is that I transferred 10ZEC to an exchange the same day that the transaction supposedly took place.
Here is the transaction ID for the 10ZEC i transferred, and in “outputs” it shows the new address with 0,11ZEC in addition to the 10ZEC: https://explorer.zcha.in/transactions/99d405a7f742a6b13ecfa0672394796e65521c391abfe22962a89c7ea116204d
EDIT: The full 10ZEC was completely transferred to the exchange, and the overview tab of Zcash4win shows that only 10ZEC has left my wallet.