Retirement: Support for .NET 8 (LTS) ends on November 10, 2026—upgrade your apps to .NET 10 (LTS)

On November 10, 2026, support for .NET 8 (LTS) will end. Your apps that are hosted on App Service will continue to run, but security updates will no longer be available and we'll no longer provide customer service for .NET 8 (LTS). Required action: To avoid potential security vulnerabilities and minimize risk for your App Service apps, [follow the steps to upgrade your app](https://aka.ms/dotnetversion) to .NET 10 (LTS) before 10 November 2026\. Help and support: If you have questions, get answers from community experts in [Microsoft Q&A](https://aka.ms/appserviceqanode14). If you have a support plan and you need technical help, create a [support request](https://docs.microsoft.com/azure/azure-portal/supportability/how-to-create-azure-support-request). 1. For Summary, type a description of your issue. 2. For Issue type, select Technical. 3. For Subscription, select your subscription. 4. For Service, click My services. 5. For Service type, select Web App (Linux) or Web App (Windows). 6. For Resource, select your resource. 7. For Problem type, select Application Code. 8. For Problem subtype, select .NET. [Learn more](https://learn.microsoft.com/azure/app-service/language-support-policy).