Fix OneDrive for Business Cannot Sign In Through HTTP Proxy on Windows 11
Question details
Users are unable to sign in to OneDrive for Business when using an unauthenticated HTTP proxy, even though personal OneDrive accounts connect successfully.
- Product
- OneDrive for Business
- Device & OS
- Windows 11
- Scenario
- Attempting to log into a Microsoft 365 enterprise account on a network routed through an HTTP proxy.
- Observed behavior
- The sign-in process remains stuck. Network analysis shows most business connections use the proxy, but at least one endpoint attempts a direct connection, causing authentication failure.
Ensure you have your specific HTTP proxy configuration details handy and know who your Microsoft 365 administrator is, as you will need their elevated access to request backend support.
Open a Support Ticket via Microsoft 365 Admin Center
Since this involves enterprise network routing and specific endpoint authentication behaviors, your Microsoft 365 administrator must escalate the issue to Microsoft Support for backend analysis.
OneDrive for Business relies on highly secure, specific Microsoft 365 service endpoints. When an HTTP proxy intercepts or blocks these required direct connections, the authentication flow fails to complete.
Resolving this behavior requires Microsoft's backend team to analyze OneDrive logs alongside your proxy configuration to adjust direct-connect behavior or endpoint routing.
Have your IT administrator log in to the Microsoft 365 Admin Center using their global or support admin credentials.
On the left-hand navigation pane, click on 'Support' and then select 'Help & support' to open the service request panel.
Type a brief description explaining that OneDrive for Business sign-in is stuck through an unauthenticated HTTP proxy on Windows 11, while personal OneDrive works.
Click the 'Contact Support' button. In the ticket details, provide your proxy configuration, network traces, and OneDrive diagnostic logs so the engineering team can investigate the endpoints causing the direct-connect failure.
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Frequently Asked Questions
Why does personal OneDrive work through the proxy but not OneDrive for Business?
Personal OneDrive and OneDrive for Business use different authentication protocols and service endpoints. Business accounts require access to specific Azure Active Directory and enterprise SharePoint endpoints that might be restricted or require bypassing in standard HTTP proxy rules.
Which URLs need to bypass the proxy for Microsoft 365 authentication?
Microsoft requires certain critical endpoints, such as login.microsoftonline.com and specific tenant SharePoint URLs, to bypass proxy interception and SSL inspection to guarantee secure authentication flows.
How can I collect OneDrive diagnostic logs for the support ticket?
Press Win + R to open the Run dialog, type '%localappdata%\Microsoft\OneDrive\onedrive.exe /collectlogs', and press Enter. The application will gather diagnostic logs and save them to your desktop in a .cab file, which you can attach to your support ticket.
