Microsoft 365 Administration troubleshooting

This library of articles provides guidance to troubleshoot and fix errors that you may experience when performing Microsoft 365 administrative tasks. For a complete list of articles, browse the navigation pane on the left, or use the search box above the pane to filter by keywords and find help with a specific issue.

Access Management

How-To Guide

• Adding guest users in the M365 admin center
• "Application configuration incomplete" error
• Can't open an IRM-protected document with sign-in prompts

Active Directory

How-To Guide

• "AADSTS65005" error when signing in to cloud services
• "Duplicate" is displayed in the ERROR column
• "This does not look like a valid user ID" when you sign in

Authentication

How-To Guide

• 80041317 or 80043431 during sign-in
• 8004789A when signing in to Microsoft 365
• 80048163 when federated user tries to sign in

Diagnostic Logs

How-To Guide

• Collect a Network Monitor trace in Microsoft 365
• Diagnostic log collection in Support and Recovery Assistant
• Enable O365 ProPlus ULS logging

Domain Management

How-To Guide

• "Add domain" option is missing
• "Cannot continue" error when starting Desktop Setup Tool
• "Remove" link is unavailable

Group Policy

How-To Guide

• Block OneDrive use from Office
• Configure default email client using policy
• No Add-ins loaded due to group policy settings