How to Fix for "We can’t connect you" 404 Error on Office 365 Login
Overview
When attempting to log in to Office 365 from a Windows 10 computer, users are getting a 404 error that reads:
“We can’t connect you. Looks like we can’t connect to one of our services right now. Please try again later, or contact your helpdesk if the issue persists. HTTP 404”
We have tried everything from repairing and reinstalling Office, checking for network issues, creating a new Outlook profile, removing/adding accounts… Nothing seems to work.
Cause
Solution
1. Update Internet Explorer settings
Go to Internet Options > Connections tab > LAN Settings
Check box “Auto detect settings” > OK
You may need to cycle the “Automatically detect settings” check box for the fix to work
2. Add a specific set of registry keys
Add the following registry key in: Computer\HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\Identity
“EnableADAL”=dword:00000000
“DisableADALatopWAMOverride”=dword:00000001
“DisableAADWAM”=dword:00000001
Note: If the above resolution does not solve the issue, open a support case with Microsoft Support.
Conclusion
That’s all, hope it helps you. If you have any questions, you can leave a comment below.
Good Luck!