Our IT has migrated our email inboxes to Microsoft 365 and since migration, my Outlook cannot connect to server. My email account was already configured from before and it just disconnected from server. When it tries to connect again, I get a message "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. 0xCAA80000 login.microsoftonline.com"See Error here
My admin removed my email account from outlook but still we face the same error when we try to add it again. I have tried to check this issue, I tried to run SFC and done many things with no luck. I have found something may be useful. In the Windows Event Viewer, I get these errors when I try to add my account now. See Event Viewer error here
I noticed that the URL in the error is which is not correctly encoded as I think the ^ character should be % character. I tried to open the link as it is, get this error
"Sign in Sorry, but we’re having trouble signing you in. AADSTS90102: 'redirect_uri' value must be a valid absolute URI."
But when I replace ^ character by % character the link opens normally and asks me for my password.
How to fix this?
72 Answers
I have managed to solve this issue by a work around. I found a way to disable using ADAL plugin for Outlook. Steps:
- Open Registery Editor
- Navigate to HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\Identity
- At the right pane, double-click at EnableADAL REG_DWORD value, and set the value data to 0. Note: If the value, doesn't exist, then create it. (From 'Edit' menu, go to New -> DWORD (32-bit) Value, and then type "EnableADAL" without quotes)
- Then create a new DWORD (32-bit) Value with name DisableADALatopWAMOverride
- Open the newly created value and set the value data to 1
- Close the registry editor and restart your PC.
Taken from:
This worked for me.
2- Exit Outlook and open the Registry Editor
- Navigate to: HKEY_CURRENT_USER\Software\Microsoft\Office\16.0
- Right-click the Outlook folder
- Rename it as Outlook1
- Restart your Outlook and add your email account to test
If the issue still continues, please try to check your connection between your Outlook and your mail server via Microsoft Remote Connectivity Analyzer.
