idspnOneNote) may have failed to start correctly because of corrupted temporary files or settings. Clearing the notebook ...

(!idspnOneNote) may have failed to start correctly because of corrupted temporary files or settings. Clearing the notebook cache and settings can resolve many errors. Any changes that have not yet been synced with the server will be lost. All of your notebooks will be closed and you will need to reopen them. This action will reset your (!idspnOneNote) application and your settings will be returned to their default.