A Surface Pro 4 user can no longer sync Onenote FWin10 to his OneDrive for Business. User continues to create notebooks which are flagged as Saved Offline (error). When Onenote is launched, system error displays for onenotem.exe...the code execution cannot proceed because appvlsvSubsystem32.dll was not found and suggests reinstallign the app. My concern is reinstalling the app will wipe out all existing databases, as I do not find any local backups with current data. I could use suggestions on best course of actions since I cannot see local backup of notebooks and cannot sync to Onedrive.