On both Mac and Win 10, how do I create a local snapshot of my online vault?

@mick_standalone - no worries ever about asking questions here; that's literally what this forum is for. :)

I MUST have the ability to open a local copy of the vault when offline (like commuting in a plane, etc).

Not sure what the problem is? Every 1Password application (on any platform) in which the user is signed into a 1password.com account contains a local cache of the data. It's located at:

/Users/aglars/Library/Group Containers/2BUA8C4S2C.com.agilebits/Library/Application Support/1Password/Data/B5.sqlite

Only, it's not just a "cache" or a backup; that's the actual data file that 1Password for Mac (in this case) opens when you unlock it using your Master Password. When you first unlock, 1Password will attempt to perform a sync of the local data cache with the server version. If it can't because you're on a plane without wi-fi or you're hiking McMurdo Sound and thus slightly out of wireless coverage area, the local copy will continue to function as it would normally, with the exception that any changes you make to 1Password (including additions or deletions of items) won't be reflected on the server copy until the next time you're online with 1Password open and unlocked.

To be clear, this isn't any different than what takes place if you use Dropbox (broadly speaking, there's a great deal of difference in the details): you work on the local SQLite database in the 1Password app on your device. IF it can sync (whether with Dropbox or 1password.com), the server will be updated. If it can't, it waits until the next time that it can...which then allows other devices connected to the same 1Password account (or sync keychain in Dropbox) to sync from the updated server version. The only thing you "lose" by being temporarily offline would be the immediate updating of the server's copy of the data...which doesn't matter because - if you are offline - you can't view what's on the server anyway, whether in the app or in a browser.

Hope this helps! :)

@mick_standalone - thanks for the kind words about 1Password. :) One thing you will want to do if you have a 1password.com account is make sure you download any documents you've uploaded, so you can have offline access to them. 1Password isn't a digital document-storage service, it's essentially an encrypted, custom database application with limited file storage capacity. You can download each Document by choosing the Documents category in the sidebar of 1Password for Mac, then selecting each Document item in turn and clicking to download. You only need to do this once in 1Password for Mac (though there's no persistent document storage in 1Password for iOS, so if you are traveling with only an iOS device, you'd need to make sure to do this every time you expect to be "out of range" and also need access to Documents).

:) :+1: