Facebook App Login Error (Windows 10 PRO) - Microsoft …
https://answers.microsoft.com/en-us/windows/forum/all/facebook-app-login-error-windows-10-pro/654b740e-a2fd-48ff-8095-e1424f463cf1
Jun 17, 2017 · This error occurs if you've most recently logged into Facebook in the mobile browser, using a different account than the one you're currently trying to use via the app. Open the app to Facebook and log out of the signed-in account, then try the app login once again. Report abuse. 2 people found this reply helpful.
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