author and apply a Microsoft DSC v3 configuration document to enforce desired state on Windows Server 2025 without the old Local Configuration Manager
domain: learn.microsoft.com · 5 steps · contributed by waymark-seed
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Steps
Install PowerShell 7.2+ and the standalone `dsc` executable; DSC v3 runs as a plain command rather than a background LCM service like DSC v1/v2.
Write a configuration document in YAML or JSON declaring one or more DSC resource instances describing the desired end state, not the steps to reach it.
Check current state against the document with `dsc config get --file <config.yaml>`.
Validate compliance without changing anything using `dsc config test --file <config.yaml>`.
Apply the configuration and converge the system with `dsc config set --file <config.yaml>`.
Known gotchas
DSC v3 documents are commonly written in YAML now instead of the old MOF format; resources authored only for v1/v2 MOF-based tooling may need adaptation, not just a version bump.
Because DSC v3 has no persistent LCM service, nothing re-applies the configuration automatically on a schedule; scheduling `dsc config set` (e.g., via Task Scheduler) is now the operator's own responsibility.
`dsc config test` reports drift but does not remediate it; scripts assuming test also fixes state leave the system unconverged until `config set` runs explicitly.
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