The developers noted that this issue may occur for users who, before updating the operating system, installed the cumulative update for Windows 10, released on September 16 this year. In addition, the problem occurs only in cases where the OS is updated with an ISO image that does not contain the fixes released on October 13 this year. These are the security patches that Microsoft releases monthly as part of the Patch Tuesday program.

It is worth noting that the loss of Windows 10 system and user certificates can be a serious problem at a time when many people have switched to remote work. The fact is that most VPN networks use these digital certificates in their work, and their absence will affect the normal functioning of such services.

Reports indicate that a certificate issue occurs when updating the operating system using outdated images or using external physical media. The issue does not affect devices that are updated through Windows Update or Windows Update for Business (for corporate customers). For now, only rolling back Windows 10 to a previous version helps return the operating system to a fully functional state.