be able to set a password is a priority like a private internal vault password to add a double layer encryption on some specific folder! 3 failed attempts should require full login again. or where's the privacy?

I would love to have that feature, too. Preferably with a whole folder, not only a file.

I agree, a locked folder similar to how OneDrive has a secure vault would be helpful. A use case would be on the mobile apps. That locked folder has keys and id photos that are not accessed on a regular basis, but you want to keep the Proton Drive app unlocked without a passcode so that other files can be accessed by the system for sharing, editing, by the Files app on iOS, etc.

Adding a passcode to proton drive and proton mail just like in proton pass would be a great feature. 3 wrong attempts then it logs you out and will require your full password +2FA. This feature would be very useful to people who have other people around their computer at times.

This would be a great secondary security measure for critical or sensitive documents. OneDrive has this with their "Vault" feature

The new proton doc is great in that it is end to end encrypted. However I am concerned in case in the future someone compromises my password say in a breach or similar. I would like an extra layer of security where I could password protect individual documents so that the only way to access them would be to be signed into my account AND to have knowledge of the password for that document...

I use proton drive to hold all of my Keys(Recovery, ssh, ect) just in case I get hacked I want to put a password on my "Keys" folder. Also I feel like everyone could benefit from this.

In case of a proton account breach, I would like to lock sensitive information inside my drive. Please add the ability to require a pin to download/preview/open a file.

Replicated request but for windows - ie requested on both platforms so please combine to increase the weight of the votes:
https://protonmail.uservoice.com/forums/932839-proton-drive/suggestions/46941256-proton-drive-windows-app-option-to-require-2fa-an

It would be nice when making a new folder with in proton drive to have the option of password lock or have a 2FA lock. That way when you want to have a more secured folder for any reason we could double lock it for extra security and the peace of mind. So often when i am working and have the apps open and get called away that lets the app open for someone snooping or even if its shared by others and multi people are using the drive. If we could lock down a folder for just that more private business stuff it be nice.

AT&AT - right, good point

Restrict access to Mac OS Proton Drive folder in Finder with Password, Thumbprint.

encrypted access
double authentication

I would like a feature for enabling password for folders in Proton Drive (Similar to mailbox password 2nd one or two password mode).

It would be slightly helpful to increase user security.

Fully agree. If I'm logged into my emails on my mac, it is just a click or two to then access all of the stored data on proton drive. It would be a huge improvement to require a 6 digit (or whatever) pass code to access the proton drive. Similar to how proton pass works currently.