The Heart Of The Internet

If an incorrect password is entered multiple times, after several unsuccessful login attempts, your Office 365 account will be locked. If your account is locked but you have not defined your recovery email address, try to fill out the Microsoft account recovery form. The plugin is activated on 3 servers (out of 4) and the modern authentication is working just fine. If the provided recommendations don’t help you resolve the issues or you want to send Office 365 complaints, call Microsoft support.

Tools That Can Help

Service health is the online tool available for Office 365 for organizations (if you have work and school Office 365 accounts). Only Office 365 administrators can access this tool in the Office 365 admin center. Use the Service health dashboard to find possible Office 365 issues and read the provided advice on how to fix them. File and storage issues with Microsoft Office 365 are more serious than other issues. They are not merely inconvenient and slow down work but can also lead to critical data loss.



Common Office 365 Issues and How to Solve Them

To diagnose and automatically fix several common Microsoft 365 sign-in issues, run the Microsoft 365 Sign-in troubleshooter. The authentication issue occurs because of missing package information about either the Active Directory Authentication Library (ADAL) or Live ID. This issue occurs only on computers that are running Windows 10, version 1703 or later, and Microsoft 365 version 1807 or later. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. I figured it was a bad credential, and everyone mentioning ADAL pointed me to the right one.

Synchronization Issues



And it’s random users, not all users experience this in this environment. I’ve been working with MS for weeks now and getting nowhere. We inherited this client and it took us 2 weeks to discover that whoever setup their O365 tenant originally hadn’t enabled Modern Authentication. We enabled it thinking that would fix the problem, but sadly no.

You can unintentionally send an important Microsoft 365 item to the recycle bin, especially if you have too many files on your device’s hard drive.The steps to access the repair tool vary depending on your operating system.We have found on user endpoints that the AAD Broker Plugin is sometimes missing and this is what causes all manner of hell and headache with Microsoft applications/services for end users.You’d think after 10 years of O365 being used, the last thing you’d have issues with is Authentication… Yet here we are, same issue, different decade.This tool should be installed on a computer as a standalone application.And it’s random users, not all users experience this in this environment.

Microsoft 365 Issues with the Safari Browser

This tool should be installed on a computer as a standalone application. After installing and running the application and entering the Office 365 account credentials, run tests to identify the problem and find the needed solution. Follow the instructions provided by the assistant to find and resolve Microsoft Office 365 problems.

How to fix Office 365 login issue?
Step-by-Step Troubleshooting for Microsoft Office 365 Login IssuesCheck if the caps lock is on.Make sure you are using the correct account (work, school, or personal).Double-check the username and password before entering.Ensure there is no extra space before or after your username and password.






Check POP3 and SMTP settings for connecting to Microsoft mail servers (addresses of servers, ports, encryption, authentication). If you use Microsoft Office 365 Outlook as a standalone email client, and you cannot send and receive email messages, check the Outlook connection settings. Make sure that network access to the Microsoft servers is not blocked. Check the firewall on your computer, the router, and DNS configuration.

I highly recommend NOT just disabling modern authentication homepage using that registry entry because you will have all manner of headache with other Office365 applications. Some of them allow users to get updates before the main release while others provide updates at a later time. The update channel used by Office 365 depends on your Office 365 subscription plan and on configuration. If after running the Remote Connectivity Analyzer Office 365 issues are not fixed, try using Microsoft Support and Recovery Assistant.



As soon as he figured it out he handed the full fix to MS support with all instructions as shown above. So hopefully the official MS support answer and documentation will change. It’s nuts to me that MS has had this issue for YEARS and has just been duck taping it and moving on. Disabling ADAL can "fix" the issue with outlook but in our experience it still left TONS of other stuff broken.