In this post, we will see how to fix OneNote sync error 0xE4020045 (Unsupported Client). Because this is a OneNote sync error, you will not be able to sync your notebooks if this error occurs on your system. This error occurs usually when a user moves the locally saved notebook to OneDrive without following the right procedure in order to sync that notebook. Though the notebook appears as a cloud-based notebook after moving it to OneDrive, OneNote still treats it as a local notebook. Due to this reason, OneNote displays the sync error 0xE4020045.
Some users are experiencing the error 0xE4020045 on the notebooks that are already saved in OneDrive. If you are facing such an issue with your notebooks, follow the solutions listed in this article.
Fix OneNote sync error 0xE4020045 (Unsupported Client)
The following suggestions may help you if OneNote is not syncing:
- Close OneNote on other devices
- Force sync your notebooks
- Create a new section or notebook
- Copy your notebook folder to the root folder of the main drive
Let’s see all these fixes in detail.
1] Close OneNote from on devices
Some users have found that the error occurs when they open a notebook that is already opened on another device. In such cases, you can fix the problem simply by closing the notebook on all your devices.
2] Force sync your notebooks
One way to fix the syncing issues on OneNote notebooks is to force sync them. The steps to force sync OneNote notebooks are written below:
- Open OneNote.
- Go to “File > Info > View Sync Status.”
- Click on the Sync Now button next to the notebook which is giving you the syncing error.
You should also select Sync automatically whenever there are changes option to automatically sync your notebooks.
This should fix the problem.
3] Create a new section or notebook
Another effective way to fix the sync errors on OneNote is to create a new section or notebook and copy all the content to it from the affected notebook. If you are experiencing the sync error 0xE4020045 with a particular section of your notebook, follow the steps below to fix the problem:
- Right-click on it and select Move or Copy.
- In the Move or Copy Section window, select the same notebook.
- Click Copy. This will create a new section and copy the content from the affected section to it automatically.
- After that, OneNote will start syncing the newly created section. If no error occurs, you can delete the problematic section and rename the new one.
If the sync error is occurring on the entire notebook, create a new notebook and copy all your content to it. After OneNote syncs the new notebook successfully, you can delete the old notebook.
4] Copy your notebook folder to the root folder of the main drive
Follow this solution if you have added the locally saved notebook to OneDrive simply by using the copy and paste method. The steps are written below:
Close OneNote if it is already running. Open the location where the notebook is stored. By default OneNote notebooks are stored locally at the following location:
C:\Users\username\Documents\OneNote Notebooks
Simply copy the above path and paste it into the address bar of the File Explorer. After that, press Enter. Replace the username in the above path with the name of your Windows 11/10 profile.
The OneNote Notebooks folder contains the folders with the name of your notebooks. Copy the folder with the name of the affected notebook.
Now, open the root folder of your main drive. The main drive in Windows 11/10 is the C drive. To open the root folder, launch the Run command box and type %SystemRoot%. Click OK. This will open the root folder. Now, paste the folder here that you have copied in the previous step.
Open the copied folder. It will contain a file, named Open Notebook.onetoc2. Double-click on that file. Windows will ask you to select a program to open that file. Select OneNote. This should open your netbook without displaying the error.
Read: Fix OneNote Not working, Not opening, Problems, Errors, Issues.
How do I refresh my OneNote?
The function key F9 is used to refresh OneNote. When you press the F9 key, OneNote will sync all your notebooks. On the other hand, if you want to refresh only the current notebook (the notebook you have currently opened), press Shift + F9.
What is error 0x80004005 in OneNote sync?
If you try to sync your Microsoft OneNote notebooks, then an error 0x80004005 for OneNote sync may occur. If you face this error, then close and re-open your notebook(s) to fix it. If that doesn’t work, create a new notebook and copy all notes from the old notebook to the new notebook. Also, clear the Temp folder, clear the OneNote cache, sign out and sign in again to OneNote to fix the issue or open your notebook to OneNote Online.
Hope this helps.
Read next: OneNote sync error 0xE000005E.
