问题：
这段时间在 OneDrive for Business 上的 OneNote 笔记本出现只读情况，无法进行编辑。

原因：
可能是 OneDrive 后台的问题。

解决办法：
只需要额外上传随意一个文件到 OneDrive for Business 就可以了。

来自微软 OneNote 工程师的解析

​Fix for Read only notebook on sharepoint (aka OneDrive For Business) 

nickandre15- OneNote Engineer - 2017.9.15

Thought I\'d plug this here:

A number of people have reported having notebooks mysteriously show up as read-only on Sharepoint. The bug responsible has been fixed, but requires you do the following to trigger the \"magic\" repair process:
1.Visit your OneDrive for Business. Address is usually TENANT-my.sharepoint.com.
2.Upload any file. Triggers Magic.
3.Magic happens. Takes a period of time.
4.Right click and force sync the notebook, which triggers a full hierarchy update

Notebook should be editable.