Microsoft is taking its time with the boot certificate rollout, but you don't have to. Activate the latest UEFI CA 2023 right now.

In June 2025, Microsoft announced that, in June 2026, it would begin deprecating Secure Boot certificates of Windows systems from 2011, which were superseded by their 2023 counterparts.

Microsoft's Secure Boot certificates expire in June and need to be replaced. Microsoft provides a guide for server admins.

In my earlier post on the Microsoft-Novell deal and its inroads with Deutsche Bank, Credit Suisse and AIG, there was a reader question about how the money exchanges hands. A spokeswoman for Microsoft ...

Microsoft on Tuesday blacklisted all DigiNotar certificates after seeing active attacks from at least one fraudulent digital certificate issued by DigiNotar. The company has released updates for all ...

Microsoft has found that some components of the Flame malware were signed using a forged digital certificate that the attackers were able to create by exploiting a weakness in the way that Microsoft’s ...

The certificate used to authenticate Mimecast’s Sync and Recover, Continuity Monitor and Internal Email Protect (IEP) products to Microsoft 365 has been compromised by a sophisticated threat actor. A ...