The Class Notebook COM Addin for OneNote Desktop applies to:įor Educators and organizations that do not upgrade their old OneNote Class Notebook Add-in to version 3.4 or higher, the toolbar UI will stop working properly on December 31st, 2022. Step 3: The process will delete the app cache and open the app on the computer. Synchronizing OneNote notebooks can sometimes be a nerve-racking experience. Note: The Class Notebook Add-in for OneNote Desktop is not being retired, but we are asking educators and organizations to update to the newer and modernized version, which is version 3.4 or higher by December 31 st, 2022. The current version of the OneNote Class Notebook Add-in is 3.4, but many educators are still using older versions, in some cases versions for 3 years ago. Once the notebooks got synced up, it takes about 10 minutes to get everything re-indexed and my search. As you can tell, the cache folder has been recreated after the relaunch of the app. And renamed the cache folder to cache.old. Solution: In OneNote Apps, close this notebook, then, re-open this notebook from notebook list, OneNote Apps will get the new hyperlink, and sync this notebook again. I shut down the OneNote app and went to the following location where OneNote cache is stored. So, the broken hyperlink will make OneNote cannot sync. Over the course of 2022, we will be requiring all educators and IT Admins using version 3.3 or older of the OneNote Class Notebook Add-in (COM add-in) for Desktop, to update to version 3.4 or higher. OneNote Apps sync a notebook with the hyperlink.