Hi, I'm sorry for the delay. I will try to elaborate using better and more clear language. I don't have my Windows 11 machine anymore so I can't take pictures, sadly.
Short explanation: OneDrive auto-syncs all documents in My Documents folder (for me). I then disabled OneDrive, which broke the sync, and made my Warband saves inaccessible. To fix it, I saved the Warband save games folder to my machine locally and disabled OneDrive entirely.
Long explanation: My problem (and I assume a few others) stem from Onedrive syncing all the data in the Documents folder to the OneDrive cloud. This includes the save game data. When OneDrive was enabled, MB Warband played perfectly fine. At one point, I disabled Onedrive from my startup sequence to save computer resources and keep my background tasks to a minimum. Doing this, however, made my savegame files inaccessible due to a syncing error.
I realized the issue once I re-enable OneDrive and it synced all of my files again. Magically, Warband worked and my saves were available. The next step for me was to disable OneDrive completely save all files locally.
The alternative to disabling OneDrive completely is that you navigate to your save games folder, default being C:\Users\USERNAME\Documents\My Games, right click on the Warband save folders, and force it to save to the local machine instead of OneDrive. If memory serves, when I right clicked the folders there was an option to save the folders to the local machine. It is also possible that I had to navigate to the Properties, but my memory isn't that sharp.
Since I can't show you exactly that sequence as I don't have Win11 anymore, here are three links with the closest approximation of what I did.
Learn how to choose the location where your files are saved by default.
support.microsoft.com
Are your files getting saved automatically in Microsoft OneDrive instead of your local folder? Find out how to stop Windows 10 from saving files to OneDrive.
www.guidingtech.com
Does this post make more sense to you? I hope I was clear enough. I realize I can be a bit vague in explaining, and wish I could record a fix video. This may not be what others experience, but I would bet that it might help a few people.
If this is still too vague, just leave me for dead.