Microsoft has told tens of millions of Windows 10 users that the latest KB4501375 update may break the platform’s Remote Access Connection Manager (RASMAN).
If you run a VPN, RASMAN handles how Windows 10 connects to the internet, and it is a core background task for VPN services to function normally.
Microsoft states that it only affects Windows 10 1903 - the latest version of the platform. The problem is Windows 10 1903 accounts for a conservative total of at least 50 million users.
Vole claims Windows 10 has been installed on 800 million computers worldwide and Windows 10 1903 is believed to account for 6.3 percent of all Windows 10 computers in June. Microsoft has listed a complicated workaround, but no timeframe has been announced for an actual fix.