I don't know what is previous mSecure version our client used but I have mSecure.mscw file and backup files
How can I restore these file to new mSecure?
it looks like I have to download 3.5.7 version and migrate to new version.
A .mscx file is an old backup file created in mSecure 3. You can download mSecure 3 for Mac or Windows in order to be able to restore from that backup file. You can download mSecure 3 for Windows here: https://support.msecure.com/en/support/solutions/articles/36000022199
In order to restore from a backup file in mSecure 3, make sure to set up a lock password and follow these steps:
I had mSecure 5 before my computer crashed. I have an activation key but I am unable to figure out how to activate the downloaded program. I am using Windows 10 pro x64
When you say you have an activation key, can you explain what you mean? mSecure 5 doesn't require any type of activation. When you install the app, you just need to sign in to your mSecure account, and everything should work. What happens when you try to sign in to mSecure 5 on your PC? Are any error messages displayed?