I tried out monero cli and gui and created two wallets with each version, named Walletcli and Walletgui. There is now a Walletcli file in the program directory but no Walletgui file, where is it? Which files are created by the program on which location (Windows)? Where ist the blockchain? How can I update the program, just copying the new files over the old? Unfortunately there is no instruction or setup.
but no Walletgui file, where is it?
Looking for "Monero Wallets" folder on your disk
Which files are created by the program on which location (Windows)? Where ist the blockchain?
On Windows the blockchain is stored in C:\ProgramData\bitmonero\lmdb. It's a hidden folder.
How can I update the program, just copying the new files over the old?
Yes, you should make a back up if things gone wrong.
Thank you, it seems to be tricky to change between wallets in the GUI. I put all files of the wallets away from the program directory to a seperate wallet directory (that should be essential!). I guess that these 3 files are everything you need: walletname, walletname.adress.txt, walletname.keys? The GUI starts with one of the wallets and I have to choose Settings - Close_wallet - Choose_language - open_a_wallet_from_file to open the other wallet. A little bit complicated, but it works.