how can i put a password on my Mc computer
my Mc computer do not have a password , but every time I want to download an application the computer ask me for a password .what should i do
iMac 27″, macOS 10.15
It is not asking for an old password for your Mac computer (and I don't know of any way to find that password).
When you download an application it asks for your Apple ID password (e.g., the password that you used to log into this forum if you only have one Apple ID).