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Office Settings & Configuration

How to Fix OneNote Metered Connection Warning on Mac and iPhone

Huma Ashraf ChHuma Ashraf Ch Oct 10, 2026 868 views

Question details

The user wants to disable the persistent metered-connection warning and SyncError in OneNote without interrupting synchronization over cellular data or a mobile hotspot.

How to Fix the OneNote Metered Connection Warning on Mac and iPhone
Product
Microsoft OneNote
Device & OS
macOS and iOS
Scenario
Synchronizing OneNote notebooks while connected to an iPhone cellular hotspot or using mobile data on an iOS device.
Observed behavior
OneNote repeatedly displays a metered-connection warning or SyncError notification, even though the notes continue to synchronize successfully in the background.
Before you start

Verify that your iPhone hotspot or cellular data plan has a sufficient data allowance, as continuous background synchronization can consume significant mobile bandwidth.

Solution 1Recommended

Manage Cellular Data Settings for OneNote on iPhone

Disable cellular data access for OneNote on your iPhone to stop the metered connection warnings, though this will pause syncing until connected to Wi-Fi.

Currently, Microsoft OneNote does not offer a native toggle on macOS or iOS to simply hide the metered connection warning while keeping cellular sync active. The only system-level workaround on iOS is to restrict the app's cellular data usage entirely.

1
Open iPhone Settings

Unlock your iPhone, locate the Settings app on your home screen, and tap to open it.

2
Navigate to Cellular Options

Scroll down and tap on 'Cellular' (or 'Mobile Data', depending on your region) to view your data usage and app permissions.

3
Disable OneNote Cellular Data

Scroll through the list of applications until you find OneNote. Toggle the switch next to it to the 'Off' position.

Manage Cellular Data Settings for OneNote on iPhone
Synchronization Paused: Disabling this option successfully prevents the warning from appearing, but it also stops background syncing. Your notes will only update when you connect to a non-metered Wi-Fi network.
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Frequently Asked Questions

Why does OneNote constantly show a metered connection warning?

OneNote detects when your device is connected to a cellular network or a mobile hotspot. It displays this warning to alert you that background syncing is occurring, which could potentially result in unexpected data charges from your mobile carrier.

Can I disable the metered connection warning on macOS?

Currently, Microsoft OneNote for Mac does not include a native settings toggle to disable this specific notification while you are tethered to a mobile hotspot.

Will disabling cellular data for OneNote delete my offline notes?

No. Disabling cellular data access for OneNote in your iPhone settings only pauses remote synchronization. Your locally saved notes remain entirely safe and will automatically sync to the cloud the next time you connect to a standard Wi-Fi network.