Microsoft has warned that if per font end-user-defined characters (EUDC) is enabled, the system will stop working and a blue screen will appear at startup. But it can be avoided if you don't install the following updates: KB4489894, KB4489890, KB4489888 and KB4489889.

Patch Manager Plus has suspended these updates and for users who already have these updates in your endpoints, kindly follow the steps given in the Microsoft's official KB article.

https://support.microsoft.com/en-in/help/4496149