What and whyBy design, Windows Update doesn't trust servers that don't have TLS certificates issued by an actual Windows Update trust anchor. We published guidance in May 2026 to help you diagnose and fix connection issues that result from this design. Rollout scheduleThis guidance was published in May to help with ongoing troubleshooting.Connection issues might be ongoing until you apply the existing solution. Impact on your organizationYour firewalls and proxies might block access to the trust...
Applies to: Windows
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).