OneDrive File Issues

How to Find What Keeps Enabling the DisableFileSyncNGSC Registry Setting

Maira Mehtab Sep 28, 2026 870 views

Question details

The user needs to identify the specific process or policy that repeatedly sets the DisableFileSyncNGSC registry value to 1, which prevents OneDrive from opening.

Product: Microsoft OneDrive
Device & OS: not provided
Scenario: OneDrive fails to open or sync, and manually resetting the DisableFileSyncNGSC registry key does not permanently fix the issue because it automatically reverts to 1.
Observed behavior: The DisableFileSyncNGSC registry value repeatedly changes back to 1, blocking OneDrive sync even after reinstalling the application or modifying related policies.

Before you start

Ensure you have administrator privileges on your computer, as monitoring and modifying the Windows Registry requires elevated system permissions.

Solution 1Recommended

Use Process Monitor to Track Registry Changes

Identify the exact service, policy, or background process modifying the DisableFileSyncNGSC key using Microsoft's advanced monitoring tool.

Microsoft Sysinternals Process Monitor is an advanced monitoring tool for Windows that shows real-time file system, Registry, and process/thread activity. By filtering for the specific OneDrive registry key, you can catch the exact background process or management tool forcing the change.

Download Process Monitor

Download Process Monitor from the official Microsoft Sysinternals website, extract the files, and run Procmon.exe as an administrator.

Configure the Filter

Click the 'Filter' menu and select 'Filter...'. Create a new rule where 'Path' 'contains' 'DisableFileSyncNGSC', set the action to 'Include', and click 'Add' then 'OK'.

Capture the Event

Leave Process Monitor running in the background until the DisableFileSyncNGSC registry value changes back to 1. You can manually trigger a Group Policy update if you suspect that is the cause.

Identify the Culprit Process

Review the captured events in the Process Monitor window. Look at the 'Process Name' column for the event that executed the 'RegSetValue' operation to see which application or service changed the registry entry.

Common Causes: Often, this issue is caused by Active Directory Group Policies (gpupdate), third-party antivirus software, or endpoint management tools enforcing organizational restrictions on OneDrive.

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Frequently Asked Questions

What is the DisableFileSyncNGSC registry key?

This registry key is utilized by Windows policies to prevent the Next Generation Sync Client (OneDrive) from syncing files. When the value is set to 1, OneDrive is completely disabled from running or syncing.

Why does my registry value keep reverting to 1?

Registry values typically revert automatically if they are being actively managed by a centralized IT policy (like Group Policy in a domain environment), an endpoint management tool, or an overactive third-party security suite.

Can I permanently delete the DisableFileSyncNGSC key?

You can delete the key using the Registry Editor (regedit), but if a background policy or service is actively enforcing the restriction, the key will be automatically recreated. You must identify and disable the source process using Process Monitor first.

Document & File Issues