KB ID 0001549
When attempting to open Outlook you see this error;
Something went wrong
Your computer’s Trusted Platform Module has malfunctioned. If this error persists, contact your system administrator with this error code 80090016
Note: The this won’t affect users who are subject to MFA (Multi Factor Authentication,) so this can be enabled to solve this problem.
On the affected machine, run regedit and navigate to;
HKEY_CURRENT_USER > Software > Microsoft > Office > 16.0 > Common > Identity
Create a new DWORD (32 Bit) Entry
- Name: EnableADAL
- Value: 0 (that’s a Zero)
What does this do?: It disables ‘Modern Authentication’.
Then restart Outlook. (Note: It may re-prompt for a password).
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