Fix slow sync times and delays when distributing pages in Class Notebook

Each time you distribute new pages from your Content Library, your Class Notebook syncs this data to each student notebook using your internet connection. Any changes made to a Class Notebook while you're offline are also synced automatically when you're online again. Large files like PDFs require more bandwidth and take longer to sync between all student notebooks on all devices.

If you notice longer than usual sync times while adding or distributing content in Class Notebook, try using these classroom best practices to fix the problem. Sync can take longer when students are offline, the notebook has a lot of content, or the class was recently rostered. If changes do not appear after syncing and refreshing, use the checks below.

Nothing you distribute is lost during a slow sync — pages continue copying in the background even if you close the distribution window or step away. If newly added students or distributed pages do not appear after syncing and refreshing, try the troubleshooting steps below.

Step one: Check your sync settings

Automatic syncing is enabled by default in OneNote for the web and current OneNote desktop apps. If sync is paused or manual syncing is turned off, turn automatic syncing back on before distributing more content.

Open OneNote for Windows desktop.
Select File > Options > Sync.
Make sure Sync notebooks automatically is selected.
To reduce sync time, avoid embedding large files directly on pages and keep large resources linked from OneDrive or SharePoint when possible.

Step two: Reduce PDFs and file printouts in Class Notebook pages

PDFs or other documents you’ve inserted into your OneNote Class Notebook using the file printout or print driver function can slow down the syncing process because of their large size. Troubleshoot by trying some of these alternatives.

Add a hyperlink to the file or insert the file as an attachment instead.
Upload your file to OneDrive for Business before adding it to a OneNote page. Visit OneDrive and sign in using your school email and password. Select Upload, then choose a file to upload. When you insert the file to your page, select it from your OneDrive folder in File Explorer.
When possible, type or copy and paste material directly onto a Class Notebook page.
Use the OneNote optimization toolto trim extra data from PDFs and allow for faster syncing. Note: This tool can reduce detail in poor quality scans so you may want to test it first on a notebook copy you don’t need for class.

Step three: Use best practices for classroom syncing

Distribute handouts and assignments using Class Notebook’s Distribute Page tool to streamline distributing content to individual students or groups of students.
Distribute materials to students after class ends or before it begins so students can sync changes at home.
Try distributing only the PDFs you need for today’s lesson from your Content Library so that your students’ devices sync quickly.
Force-sync your Class Notebook after you distribute new materials to speed up the syncing process. Right-click the notebook name and select Sync this Notebook to force sync. Encourage your students to force sync when they open their app at home, finish homework, or are about to start class.
Close any notebooks you or your students are not currently using. To do this, right-click on the notebook and select Close this notebook.
Turn off Auto Sync Attachments on your iPad by navigating to the Sync page in your OneNote settings. All text and ink content will still sync automatically, but OneNote pages with rich content like images and PDFs will wait to sync until you visit the page. After that, the page you visited will begin syncing automatically.