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Microsoft Teams Error code 401

Unauthorized access or authentication issues.

Understanding Microsoft Teams

Microsoft Teams is a powerful collaboration tool that integrates with Office 365 to provide a unified communication and teamwork platform. It allows users to chat, meet, call, and collaborate all in one place, enhancing productivity and teamwork.

Identifying the Symptom: Error Code 401

While using Microsoft Teams, you might encounter the error code 401. This error typically manifests as an inability to access certain features or data within the application, often accompanied by a message indicating unauthorized access.

What You Observe

Users may notice that they are unable to log in or access specific resources within Microsoft Teams. This can disrupt workflows and hinder communication.

Exploring the Issue: Unauthorized Access

Error code 401 is an HTTP status code indicating that the request has not been applied because it lacks valid authentication credentials for the target resource. This usually means that the server could not verify that you are authorized to access the requested resource.

Common Causes

This error often arises due to incorrect login credentials, expired passwords, or insufficient permissions assigned to the user account.

Steps to Resolve Error Code 401

Step 1: Verify Credentials

Ensure that you are entering the correct username and password. Double-check for any typographical errors and confirm that your account is active.

Step 2: Check Permissions

Verify that your account has the necessary permissions to access the resource. You may need to contact your IT administrator to adjust your permissions if necessary.

Step 3: Update Password

If your password has expired, update it through your organization's password management system. Ensure that your new password meets the security requirements.

Step 4: Clear Cache and Cookies

Sometimes, clearing your browser's cache and cookies can resolve authentication issues. Follow this guide for instructions on clearing cache and cookies in your browser.

Additional Resources

For more detailed troubleshooting, refer to the Microsoft Teams Troubleshooting Guide. If the issue persists, consider reaching out to Microsoft Support for further assistance.

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