Cannot Sign-In to an Office 2016 Application on Windows 10
Dec 17, 2025
Administration
Okta Classic Engine
Directories
Okta Identity Engine
Overview
When a user attempts to sign in to an Office 2016 application on a system running Windows 10, the sign-in window is either blank or shows a Signing In message with no progress:
Applies To
- Windows 10 (build 15063.138 and later)
- Office 2016 (build 16.0.7967 or later)
- Integrated Windows Authentication (IWA)
- Okta Classic environments using Desktop SSO (IWA) that are not configured to use SSL
Cause
Solution
Make sure that all IWA servers are configured with SSL certificates. Please refer to Install and configure the Okta IWA Web App for Desktop SSO guide for additional guidance on enabling SSL for IWA (see the Configure SSL section).
