To the point: Secure Boot certificates will expire on 24 June 2026 for Windows and Linux systems with Secure Boot enabled, requiring administrators to plan timely rollout of new certificates.
On 24 June 2026, Secure Boot certificates expire for Windows and Linux systems with Secure Boot enabled. Microsoft has been working for months to support IT administrators with the exchange for new certificates.
The expiration date for the current Secure Boot certificates is set for 24 June 2026. This affects Windows systems as well as all Linux systems that use Secure Boot. After this date, the older certificates will no longer be valid.
Microsoft has already launched a replacement campaign several months ago to support IT administrators in updating their systems. The goal is to protect critical infrastructure and enterprise environments from a possible outage scenario after the deadline.
However, reports show that administrators face challenges in practical implementation. The complexity of rollout processes and the diversity of affected system landscapes make for a smooth migration. Particularly in large enterprises with heterogeneous infrastructures, the process can bring technical and organizational hurdles.
Source: borncity.com · Published 23 June 2026
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