I already have a vault and wanted to add a new empty one.
When I use File > Add New 1Password Vault it always fails with the following error after I type a new master password :
"...\1password.agilekeychan" is not a 1Password Vault.
Changing your master password in the Mac version might correct this problem.
When I browse the directory, I found some files : there are 1Password.html, AgileKeychain.ico, desktop.ini, the data folder contains a default folder with 3 files : 1password.keys (containing an xml file), contents.js contains only 2 NUL bytes and encryptionKeys.js with a lot (288 bytes) of NUL bytes (0x00).
It seems that the new vault feature is buggy on windows.
1Password Version: 126.96.36.1992
Extension Version: Not Provided
OS Version: Windows 10
Sync Type: Not Provided