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Hello.

Users are unable to sign in to Office 365 apps upon launch.  The login window is blank.  Logged in as admin with settings disabled, the login windows load without issue. Any ideas on what I’m missing?

Thanks,

Two thoughts come to mind, first, that your firewall is blocking the required Microsoft IP addresses and URLs. Second, have you tried using Office-Reset to factory reset Office and see if that resolves the issue? But based on what you’re seeing I believe that it’s a firewall issue,

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