Sign-in & Login Problems

Fix OneDrive Server Error in '/' Application Sign-in Failure

Kushani Nimanthika Sep 28, 2026 868 views

Question details

Users encounter an ASP.NET server error and a recurring authentication loop when attempting to sign into OneDrive.

Product: Microsoft OneDrive
Device & OS: not provided
Scenario: Signing into OneDrive via a web browser using two-factor authentication, particularly when accessing it through an Okta dashboard.
Observed behavior: The browser displays an ASP.NET "Server Error in '/' Application" message. When attempting two-factor authentication, the system loops the user back to the sign-in page without granting access.

Before you start

Confirm whether this error occurs only when accessing OneDrive via the Okta dashboard or if it persists when logging in directly through the Microsoft portal.

Solution 1Recommended

Escalate to Microsoft and Okta Support

Because this is a known server-side integration failure between Okta and Microsoft, submitting a joint support ticket is required for a permanent fix.

This ASP.NET error is typically not caused by a local browser or device issue. It is a recognized service-side and identity-provider integration problem that has impacted users since April 2024.

To resolve it, your IT department needs to coordinate with both vendors to fix the authentication flow.

Document the error

Take a screenshot of the exact ASP.NET "Server Error in '/' Application" message and record the timestamp of the failed login attempt.

Contact your IT administrator

Report the issue to your organization's IT support team, emphasizing that it is an Okta-to-OneDrive two-factor authentication loop.

Open a joint support ticket

Request that your IT administrator open or escalate a joint support ticket with both Okta Support and Microsoft Support.

Request service-side resolution

Provide both vendors with your authentication flow details and request a confirmation once the server-side integration is repaired.

Known Issue: This specific Okta dashboard and OneDrive integration failure has been widely reported as a server-side bug requiring backend resolution.

Solution 2

Bypass the Okta Dashboard Workaround

If you urgently need access to your OneDrive files, bypassing the Okta dashboard and logging in directly to Microsoft 365 might bypass the integration error.

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Frequently Asked Questions

What does "Server Error in '/' Application" mean in OneDrive?

This is an ASP.NET backend error indicating that Microsoft's servers encountered a problem while processing your request. In this context, it usually means the integration between the identity provider (like Okta) and Microsoft's authentication service failed.

Can I fix this OneDrive login error by clearing my browser cache?

Generally, no. Because this is a server-side failure related to identity provider integration, local troubleshooting steps like clearing cache, deleting cookies, or reinstalling the browser will not resolve the underlying issue.

How can I access my files while this Okta and OneDrive error is being fixed?

You can try accessing your files through the local OneDrive desktop application, the mobile app, or by logging into portal.office.com directly via an Incognito browser window to bypass the Okta dashboard.

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