Microsoft says the August 2026 security update may trigger 0xc0000409 errors on Windows Server 2016 systems where the Compatibility Appraiser diagnostic service is enabled.

Microsoft says devices running unsupported versions of Windows will stop receiving security updates after next year's Windows ...

Microsoft will rotate Windows Update certificates in May and June 2027. See which Windows versions need updates and how to ...

Microsoft has set two expiry dates, May 17, 2027 and June 19, 2027, for the certificates that let a Windows device make ...

Microsoft says PCs on unsupported versions, or supported ones missing patches, will lose Windows Update access when certificates expire in May and June 2027.

Microsoft says devices must receive replacement certificates through monthly updates before May 17 or June 19, 2027, or risk ...

Microsoft is warning organizations that certain Windows systems will no longer be able to receive updates starting in May ...

According to Microsoft, the certificates used by Windows Update services have a preset expiration date and must be replaced ...

Users on older versions of Windows 11 or ESU Windows 10 are advised to update before June 19, 2027 to avoid the loss of ...