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 navigate to;
Rename that folder to Microsoft.AAD.BrokerPlugin_cw5n1h2txyewy.old
The log out and back in again.
WARNING: This involves disabling modern authentication, do not consider this a fix, it’s more of a work around, that will stop working in or around November 2019, when modern authentication is manditory.
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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