🔑 Fix Outlook OAuth2 Authentication

Last updated: October 30, 2025

Resolve modern authentication and OAuth2 sign-in issues including Authentication Method Not Supported errors

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What this helps with

What to expect: Hard difficulty • usually about 30-45 minutes.

This is one of 43 Email & Communication fixes in the WindowsHelper library. The full step-by-step fix for this is in the WindowsHelper app.

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