For e-OLF smart card users (patents online filing):
After a major Windows 10 update from Microsoft it is possible to get one of the following error(s) when trying to use the smart card, and not allowing you to finalize the process of online filing:
• Cannot initialize reader connection error or OLF smartcard not recognized
The European Patent Office (EPO) sent a notification where the issue and the cause is described, and they also provide a solution to fix this problem. EPO also asked Microsoft to fix this bug but cannot give a date when this will happen. Until then, the solution indicated by EPO works. Here you may find the notification from EPO.