Microsoft warns admins to update Windows PCs or risk losing Windows Update access

Older Windows PCs could lose access to Windows Update in 2027 if they miss required certificate updates. Most supported systems need a specified security update by May or June 2027; unsupported versions must be upgraded. Devices updated through WSUS are not affected by this certificate rotation.
Source

👉@sysadminoff

https://4sysops.com/archives/microsoft-warns-admins-to-update-windows-pcs-or-risk-losing-windows-update-access/