Microsoft Reduces NuGet API Key Lifetime to Enhance Security

Microsoft is implementing a significant change to the NuGet.org API key policy, reducing the validity of new API keys from 365 days to 30 days, effective August 17, 2026. This decision aims to enhance supply chain security and mitigate the risk of credential theft that could lead to the publication of malicious .NET packages. Existing API keys created before this date will remain valid until November 1, 2026, after which developers must generate new keys or utilize NuGet Trusted Publishing. While this change addresses some security concerns, it does not completely eliminate the risks associated with API keys. Developers are encouraged to adapt to the new policy to maintain the integrity of their packages and protect against potential threats.

Key Points: • NuGet.org API key lifetime reduced from 365 days to 30 days starting August 17, 2026. • Existing API keys will remain valid until November 1, 2026, requiring developers to update their keys. • The change aims to reduce the risk of credential theft and malicious package publication.