For all of my Office 365 clients, including my own setup from the Action Pack, Modern Authentication is enabled. I have run into multiple Outlook 2016 installations where the only way to get connected to Outlook is to add EnableADAL and set it to 1. These have been fresh Office 365 Business Premium installations, existing Office 2016 OEM installations, and on my Action Pack installation of Office 2016. Try testing the configuration of your Office 365 email system and fix the problems that are preventing users from using the email services.
Tools That Can Help
You may encounter issues when using any application, and Office 365 is no exception. Not all issues are caused by bugs left unpatched by the software vendor or by third-party applications like the recent Crowdstrike incident that caused a global O365 outage. Many issues that you may face day-to-day can be fixed on the client side. If you encounter an issue in Office 365 that can only be fixed by the vendor, Microsoft usually releases an update to resolve any known issues as soon as possible.
Unresolvable Problem on Signing In Microsoft Office 365 Apps on Windows 10
You can set access permissions for the entire organization or invite only the users you specify.After looking deeper into my problem with my RDS servers, the only solution I found is to run the script of @spiceuser-lijul into a GPO at each user logon.Just today he IM’d me and said "oh yeah, this other issue we have been trying to fix for weeks on end… it was ALSO just resolved because we fixed this".Then try to activate the installed Office 365 suite again on your computer.Information and fixes from Microsoft have been scant as well, outside of the registry key one.We haven’t seen this issue arise when a user is on a machine that was originally imaged with Office 365.
My main concern is that these dialog boxes may return, prompting further user frustration and possibly generating tickets. Speaking of research, I haven’t found much info newer than December 2018. I haven’t opened a ticket with MS yet but I may if my search does not prove fruitful. Once the key is added, and the user restarts Outlook, they receive a legacy authentication dialog box, enter their domain password, and connect to outdoor signs for business their mailbox without issue. This seems to be our most effective fix, and it’s the one we arrived at after hours of forum digging and web searches.
How do I fix Outlook login problems?
Additional resources
They can either be simple, like the OneDrive service not running or the missing OneDrive icon on the taskbar, or more complex, like OneDrive conflicting with Microsoft 365. Below we provide a more detailed list of issues and corresponding solutions. Editing file permissions and providing users with appropriate access is a simple way to solve such Microsoft 365 problems.
Microsoft Office 365 Activation Issues
If the provided recommendations don’t help you resolve the issues or you want to send Office 365 complaints, call Microsoft support. 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.
Domain Verification Issues
Organizations value the capabilities that the Microsoft 365 suite provides for shared access and simultaneous file editing for team members. However, sometimes employees may not have the required permissions to open and edit an item. If you have forgotten your password for the Office 365 account, try to recover or reset the password.