Upon a request from a friend, I manually deleted my Skype chat history with him, but it turns out that I'll actually need that history after all, and I'm hoping to recover everything. The way I deleted it was that I right clicked his profile and selected "Delete conversation". When I did that, it gave me a warning: "Are you sure you want to delete this conversation? It will only be deleted for you and no one else." so I'm sure the data must be out there somewhere. I deleted this toward the end of March 2021.
I'm using Skype for Desktop. I also have a backup service (Crashplan for Small Business) that should in theory have backups of all of my local files. I can just select whatever date and grab the file as it existed on that day. I thought that it would be the main.db file in C:\Users\YourWindowsUsername\AppData\Roaming\Skype\YourSkypeUsername, but it turns out that Microsoft no longer uses that database to store chat history. I've read elsewhere that it's now stored in skype.db but for some reason Crashplan didn't back that folder up. Regardless, the skype.db file in there now says that it was last modified on 5/31/2018, so that can't be where it's stored.
I'm on Windows 10, and the Skype version is 22.214.171.124.
Does anyone know how to get this chat history back? Thanks!