Without this certificate, your system cannot verify the authenticity of major Microsoft products. What is a Root Certificate Authority?
| Field | Value | |-------|-------| | | CN = Microsoft Root Certificate Authority 2011, O = Microsoft Corporation, L = Redmond, S = Washington, C = US | | Issuer | (Same as Subject – Self-signed root) | | Serial Number | 28 8c 7d 3a 59 d8 c2 4f 82 1f 5f 51 94 3b 64 64 | | Thumbprint (SHA-1) | 8f 88 e7 1a bc 0c 0d 87 77 35 b5 75 95 54 5b 84 64 2c e1 2a | | Thumbprint (SHA-256) | a1 14 4e 0a 39 d8 0f 35 7d 3e c6 9a 01 29 0a 85 41 5f b1 bc 39 78 6e 8c b9 e4 07 a9 0e 37 9c 3c | | Valid From | May 9, 2011, 15:50:35 UTC | | Valid To | May 9, 2031, 15:50:35 UTC | microsoft root certificate authority 2011.cer
8F43288AD272F3103B6FB1428485EA30E4E79C1F Without this certificate, your system cannot verify the
To understand the root certificate, one must understand certificate chaining: The 2026/2036 Lifecycle Context It is vital to
certutil -addstore -f "Root" "path\to\microsoft root certificate authority 2011.cer" Use code with caution. The 2026/2036 Lifecycle Context
It is vital to understand what this expiration means. It does instantly break systems signed with this certificate. Any software, driver, or firmware file that was signed with a valid certificate before its expiration date will remain valid and functional . The primary risk is that after the expiration date, Microsoft can no longer use that specific root certificate to issue new updates or to make critical changes to the Secure Boot database (DB) and revocation list (DBX).
[ Microsoft Root Certificate Authority 2011 ] <-- The Ultimate Trust Anchor │ ▼ [ Intermediate Certificates ] <-- Issued by Microsoft │ ▼ [ End-Entity Certificates ] <-- Used for Windows Updates / Drivers
