Azure 14 days
Azure Functions .NET 9 end of life (end of support)
By November 10, 2026: change language version in app settings and redeploy. After that, .NET 9 on Azure Functions is still yours to run; it just isn't anyone's job to patch. Source: learn.microsoft.com, checked 2026-10-15.
- What's retiring
- .NET 9 end of support (Azure Functions)
- When
- November 10, 2026
- Days left
- 14 days left, as of 2026-10-27.
- What happens
- Function apps on this stack lose support.
- What to do
- Change language version in app settings and redeploy.
- Kind of change
- Runtime end of life
- Official source
- learn.microsoft.com ↗ (last checked 2026-10-15)
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