If you got the file from a Telegram channel, check the post caption, pinned messages, or the channel's main description.
Since ZArchiver didn't set the password, the app cannot "tell" you what it is. You must find the password from the original source where you downloaded the file. Common places to look include: password of zarchiver
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. If you got the file from a Telegram
: Only the 7Z format allows you to encrypt file names. In standard ZIP format, anyone can see the names of the files inside even if they cannot open them. Troubleshooting Forgotten Passwords If you have forgotten a password, your options are limited: Common places to look include: This public link
Verdict A powerful, no-frills archive manager for Android users who need broad format support and reliable performance; best for users comfortable with a utilitarian interface.
so others can't even see what files are inside the archive without the password. Format Choice formats support password protection within the app. Are you trying to set a password for a archive, or are you looking for the password to a file you already downloaded ZArchiver - User guide - ZDevs