Why does my GreenStack site take a long time to boot?

Long boot times on GreenStack are usually caused by the default .NET file watcher struggling with the container’s filesystem.

This is resolved by the following environment variable:

DOTNET_USE_POLLING_FILE_WATCHER=true

This switches .NET to a polling-based file watcher, which performs reliably on containerised and network-backed filesystems and avoids the long delays seen during startup.

This variable is set by default on GreenStack, but you can confirm it is present in UmbPanel under your service’s environment variables. If it is missing, please contact support.