Windows PKI blog

News and information for public key infrastructure (PKI) and Active Directory Certificate Services (AD CS) professionals

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  • Blog Post: Upgrade Certification Authority to SHA256

    A common question in the field is about upgrading a certification authority running on Windows Server 2003 to use Crypto Next Generation (CNG) to support SHA256. CNG was introduced in Windows Server 2008 and higher operating systems, as a result, an upgrade to the operating system is required. After...
  • Blog Post: SHA1 Deprecation Policy

    Today Microsoft has announced a new policy for Certificate Authorities (CAs) that deprecates the use of the SHA1 algorithm in SSL and code signing certificates, in favor of SHA2. The policy affects CAs who are members of the Windows Root Certificate Program who issue publicly trusted certificates. It...