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ProtonVPN Windows client authentication issue on Windows 7 Monday 18th November 2019 15:27:00

Following security strengthening of the ProtonVPN API endpoint, we've been reported about compatibility issues that affects authentication and other API interactions for ProtonVPN Windows client running on certain configurations of Windows 7. Installing KB2992611 should fix the issue. This dependency will be enforced in the next version of ProtonVPN Windows client.